You post elsewhere that the fact that this forum changes certain words like homicide & caca etc annoys you, well I am annoyed when a person posts, gets a reply to which they reply then when I go to answer them they have deleted their original post & their reply, leaving only mine, totally out of context. Not to mention that I have wasted my time, thinking about how best to respond to their reply to my questions/comments!!
Nevertheless & in short here is my reply, you need to forget wbout your family & what they do/say/think whether it be about you or themselves & deal only with you. You are responsible for yourself, your actions & inactions so take that responsibility & make some choices, do nothing, change nothing & things will not change, do something, change things & your life will change.
Also re your comment that you "felt nothing" when your sister was homicide-e-d - everyone responds to grief, loss, anger, hurt etc differently have you considered that you were at 16 (as I recall) unable to cope with all of the emotions, so many & all at once plus what you saw going on around you for others - so you closed down in order to protect yourself because you did not know how to deal/cope with it all, it was too much & your parents etc were so busy dealing with their own grief etc that they were not there to help you. That does not mean you "felt nothing" it means well perhaps that you still haven't dealt with your feelings re what happened.
Maybe if you did deal with these emotions & your feelings of hidden(?) anger that your family forgot you at that time you would be alot happier, healthier & able to hold down a job & maintain & relationship.