There are times when I take that approach too, but honestly what has consitently freaked me out through the course of my job(s) are those patients who have suffered strokes and are basically condemned to a bed-ridden existence, entirely dependent on others, with little-to-no ability to communicate, and no quality of life. I grew up with a grandfather who had that sort of life for his last 20 years or so, and I don't want to follow that path. He abused alcohol and cigarettes most of his life, so there were additional lifestyle factors, but still....the picture is pretty clear in my mind. I'd rather leave this world a little early than live in that sort of condition.