Would you want to live forever? Does your answer change depending on whether or not everyone else gets to live forever as well?
Well, provisionally yes. The provisional part being that I could decide to die if living palled on me. I wouldn't want Isstvan's immortality (from Foglio's adaptation of Another Fine Myth) in which not only don't you age, you can't even be KILLED.
Oh, and I also don't want the version where you live forever but don't stop aging, AKA the Struldbrug problem.