Well, your post was sort of chilling to me, though I do not have schizophrenia (though I do have ADD inattentive). Your childhood and education are similar in many ways (though more harsh), I too had many frustrations in getting treatment, and we're about the same age; your writing is very clear and intelligent so I felt enough pangs of empathy to register and reply.
First of all, I should post a disclaimer that I am not a doctor, none of what I say is a substitute for medical advice, and the best course of treatment is to discuss things with a medical professional.
But, my opinion is as follows...
Your past
You had a very hard childhood, clearly with little emotional nurturing. In a related disorder, schizoid personality disorder (which is mostly the negative symptoms of schizophrenia, such as flattened affect and social withdrawal), the primary cause identified in medical studies is a lack of emotional nurturing during childhood. I believe those factors may have predisposed you to experience some of the negative symptoms you have today.
Next, your emergence of positive symptoms was preceded by great stress and possible trauma via the ECT and fever. Emergence of the positive symptoms of schizophrenia tends to be after a period of great stress, and it is possible that the ECT/fever contributed additionally.
The nature of SZ
In twin studies, schizophrenia only occurred in both a little over half the time. That means that genetic and childhood environment factors certainly do not doom you to SZ, and that behavioral causes can be significant as well. So I do believe there is a way "out" of your SZ-- you did not always have it, and many treatments are effective.
In SZ, the structure of the brain and activity changes (which isn't to say these changes are permanent-- the brain constantly changes structure based on what we do and experience, and constantly makes new neural cells). For an example of neuroimaging in SZ, see:
http://www.amenclinics.com/bp/atlas/ch8.ph
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My understanding of this is that there is regional hyperactivity in the limbic system of your brain (the "reptilian" brain controlling respiration, movement, etc) and regional hypoactivity in the frontal cortex, which is the most evolved region of the brain and considered to be the "seat of consciousness"-- it receives inputs from the limbic system and striatum. Generally, hyperactivity in the limbic system is associated with impulsiveness and increasing the strength of perception, and hypoactivity in the frontal lobe is associated with the loss of ability to suppress impulses, plan things, etc. A specific region in the frontal cortex implicated in suppressing activity in other regions of the brain is the orbitofrontal cortex.
The causes of SZ
There are many theories as to why this is. Most of them involve the neurotransmitters dopamine and glutamate, which are excitatory neurotransmitters and stimulate activity as a whole. With low dopamine levels in the frontal lobe, your higher brain functions are disrupted, and high DA levels in the limbic system mean you have overwhelming input as well. Glutamate is what is chiefly implicated as communicating between different regions of the brain, and in SZ disruption of the glutamate system results in a disruption of synchronized brain activity. One study I read showed wildly different EEG results in various sections of the brain in SZ patients, and yet, relatively consistent EEG scores in normal controls.
Other theories, especially those focusing on the negative symptoms (not hallucinations) involve overactivity of the opioid system due to increased levels of beta endorphin. Beta endorphin is released in response to pain, physical or mental, and sustained levels slow down neurotransmission (creating "mental fog"), inhibit the normal release of catecholamines during exercise (making it very difficult and fatiguing), and also blunt emotion and empathy.
So, what causes the DA/GLUT abnormalities, and what causes the increased BE levels?
Pain causes the rise of BE, and one theory paper I read suggested this was due to negative avoidance-based coping strategies. Basically, giving up, feeling helpless, running away and isolating yourself, that kind of thing. This creates lots of mental pain, and will spike BE levels in anyone. Social defeat stress has been shown to increase BE levels significantly in studies, which in turn has been shown to decrease empathy and increase pain tolerance.
This sort of coping strategy also has negative consequences for the dopamine system. In the striatum and frontal lobe, dopamine generally governs executive control/planning, impulse inhibition, and motivation/goal-directed behavior.
Interestingly, these dopaminergic pathways develop or atrophy with use. In people who have to take on the role of a parent at an early age and really, really use these abilities that dopamine supports, they develop very strongly. Yet in learned helplessness, depression, ADD, or when people are not engaging in these behaviors, these pathways atrophy.
Further, stress plays into this as well. Long-term levels of high cortisol bind to GR/MR receptors in the pituitary gland, which have a direct relationship with the brain's dopamine system. With excessive stimulation, the GR/MR receptor density in the pituitary increases, and this is followed by diminished ACTH secretion. This is turn lowers dopamine release. Conversely, dopamine decreases GR/MR density in the pituitary and this results in greater ACTH secretion. In cases of post-traumatic stress disorder these changes are especially noted.
SZ treatments
You appear to have both positive and negative symptoms of SZ. Typically, antipsychotics or atypical antipsychotics are used here, but it seems like from your description-- and you could only truly know this with a SPECT scan, I'm just guessing-- you may have not that exaggerated of activity in the limbic system and suppressed activity in the frontal lobe, so as a result these drugs just suppress neural activity as a whole too much. It is possible that a lower dose or different antipsychotic may work for you. Another possibility for negative symptoms is a psychostimulant like those used in ADD, but these run the risk of making the positive symptoms worse. If you do explore this route with your doctor, make sure you are carefully monitored and only slowly increase your dosage upwards.
Next, another treatment of SZ used for a very long time before antipsychotics is DHEA, a neurosteroid that reduces both positive and negative symptoms with very few (if any) side effects, and is sold OTC. However, the effects are relatively modest, but I would give it a try if I were you.
Stress reduction and meditation are effective interventions in many studies for SZ, as are social skills training and group therapy. These all help diminish some of the stress and social factors underlying the cognitive dysfunctions and symptoms. Do not underestimate the importance of behavior therapies. A product (I have no vested interest with btw) you might be interested in is [edit for advertising].. METT/SETT trains you to recognize facial displays of emotion and is produced by the very well known and respected Dr. Paul Ekman who pioneered that field of research.
Finally, nicotine is known to be beneficial for SZ, but I would recommend not using tobacco products due to the cancer risk. A nicotine patch or something might be helpful, but like other stimulants, take care it does not worsen positive symptoms.
My advice
Try different medications, do therapy and behavioral work. Isolation and avoidance will only make things worse.
Having opinions is not wrong, it's natural, and without opinions you could not function or survive.
Real people lie and are honest. The natural of man is dualistic, even if the ideal is not.
You probably can make it in a relationship, even if not today, consider that your experiences have probably made you appreciate good social connectedness more than normal, as well as being emotionally available for your child.
Some people may have hated you, but most people in the world do not know you, and most people would not hate you if they did. The only emotion I feel towards you in writing this is compassion.
Write down the negative and delusional thoughts you know are wrong, then challenge them and write down something optimistic/true (like I just did). Or rephrase them in the form of "X happened and I felt Y, but I would have preferred Z instead."
I hope this post didn't overwhelm you, but you seem very intelligent so I suspect it may give you new directions to explore. Your intellect and writing are tremendous assets to you, and with them you can understand and change things for the better.
Some books you might like are "Emotional Intelligence", "Social Intelligence", and "Destructive Emotions" by Daniel Goleman, though they are not about schizophrenia per se.
Remember, compassion begins with yourself. You as a human being alone are of equal value and worth to all others, no matter their accomplishments or crimes, and just as deserving of happiness. And I for one hope you can overcome this and be well and happy, for you deserve no less.