Two things to keep in mind, in this utilitarian age: (1) If you are registered as an organ donor, you should be aware that they don't want your organs after you have died. They want your organs while you are still alive. They will give you a muscle relaxant, and go to work. They may or may not give you an anesthetic. (2) If you make a living will, in which you say you do not want "extraordinary measures" to be taken to keep you alive, you may find that steps are taken to hasten your death - even if you could, with basic treatment (including food and drink), expect to live considerably longer.