Well, you guys will be unhappy to know that if I ever get a horrible disease, I'm going to drain the health care system of every cent I can trying to stay alive.
Death is a horrible thing and I don't care how much money is spent trying to prevent it.
At a certain point, life is a horrible thing, and there are some people who would spend a lot of money to end it comfortably. There are forms of pain that medical science can't manage yet, and forms of pain that are too expensive for the average person to afford to manage. For some people it can get to the point where the thought of absolute nothingness* is a comfort instead of crime.
For me, life is my ability to live. Being hooked up to a life support system, unable to function outside of it, unable to communicate ... well it sounds more like torture than life to me. I would no longer be living, I would be a pain machine with an arbitrary amount of brain activity that someone else has determined makes me 'alive'. Maybe I would see things differently once I get there, I don't know, but it doesn't sound like living to me.
* Given that I am a Christian, I should probably insert Heaven here, but the thought of Heaven is not the reason I'm a Christian. In the event that I'm wrong, I'm not afraid of nothingness.