Personally, I don't think very very ill people should be saved, especially if they are capable of reproducing - not only to prevent them from passing on their defective genes to another person and dooming them to suffering or death, but also in the event that sick person dies, they may end up orphaning their child. I think it's okay to medicate people to be comfortable if death from illness is inevitable, but I don't think extreme measures should be taken to prolong a person's life. By extreme, I mean the use of life support, transplantation of organs with high rejection rates, years and years of chemo (since I think that kills the person as much as the cancer). And a large part of me wishes those who are incredibly mentally unstable could just get taken out behind a shed and shot - people that nuts serve no purpose and are better off dead...and I mean the real nutjobs, not someone with ADHD or chronic anxiety.
The reason medical care is so expensive is because we save far too many people and don't even offer those in the mose pain a means of passing on with dignity (euthanasia). When a person is beign kept alive by machines, tubes, wires and medical staff, they cross the line of being a patient and enter the realm of being an experiment and a cash cow for the hospital. Most people do not want to let their loved ones go, and I realize that...hospitals do too and they will milk a family for all they're worth when they are most vulnerable. If we didn't save people who were going to die regardless of what was done, medical costs would not be quite so high; I don't mean a dramatic drop in prices, but at least a 5 percent decrease.
I think if the person is capable of living a fairly normal life after the heart attack or the stroke or what-not, then they should be helped be saved. But if they end up being paralyzed from the neck down, or they become retarded or anything else that pretty much renders them useless, then it is probably more humane for that person and their families for that person to be allowed to pass on or undergo euthanasia (if it were legal for people).
I know someone personally who suffered numerous health problems and lives a normal life. He was born with a heart defect that could have killed him (it was fixed), had a stroke when he was 14 and was comatose for two months afterwards, and he's blind in one eye and has severe allergies that caused him the loss of a lung. And yet, he does perfectly fine and one would never guess he had so many brushes with death. I think he is one of the lucky ones to recover completely (or as close to it as one can get) from a stroke, and I would not advocate someone who can mostly or totally recover being left to die.
The fact of the matter is that people play God every day. If you pop an aspirin for a headache, then you're playing God. If you get a piercing, you're playing God. If your God wanted you to be headache-free and have a bolt through your nose, s/he would have given it to you. I don't see a problem with people interfering with nature a little, nor do I see a problem with prolonging one's life if they are healthy and physically capable of living happily and to the fullest.
Abortion can be interpreted as a means of prolonging a woman's life - her social life, her mental stability, her paychecks, her relationship or marriage, her physical appearance, and so forth. By ending an unwanted pregnancy, a woman can save herself from the little death that parenthood causes in every mother and father.