I'm not sure how I'll feel when I'm old or if I'll even make it that far, but I have a lot of **** that I wanna do. With that said, and I know the OP said that this wasn't a suicide thread, but I think Martin Manley makes a good case for leaving on your own terms while you're still on top of your own ****.
Martin Manley Life and Death - January 1, 2012