My mother had terminal cancer but her heart was very strong. She was out of her head with it in the hospital kept trying to pull the tubes out. I finally got in bed with her to calm her. I was in there for about 24 hours. Finally the nurse said it was time to give mom some more drugs in her IV. One type of drug was to spare her pain and relax her, the other type of drug was to insure she didn't seize because if she did she'd probably die.
I was in my early twenties, an only child, my dad was a long time out of the picture. So I told the nurse to go ahead and give her the pain med, but withhold the anti-seizure drug. So they did, my mom seized in about an hour and passed away.
So Tim, sometimes they do let the family decide......