I think it's smart to think about those things before the time comes and tell your doctor to mind his own damn business. Heck, I'm only 23 and have thought about at least writing down my wishes because you never know what happens. Granted, no one would take me seriously if I attempted to do it the legal way since I have really no possessions but still......I understand his concern but at the same time, it's also his duty as a doctor to do his patient's wishes. Some patients refuse other kinds of treatment for cancer or other things and they have to do it. Unless you are in there speaking suicidal thoughts to the point where he HAS to do something I would just be adamant. You know yourself better than he does. Docs kept misdiagnosing me and I wanted an EEG done and no one would do it. Finally I had to tell them to suck it and order the stupid test and look at that...I was right and they were wrong. Docs don't always know best. And if he still wont budge I would just go straight to a lawyer. Good luck getting this figured out.