While I do feel a bit embarassed to do so, I still feel that I should plug my short story "In a Billion Years", as it seems to be a kind of an example of the thing Eli is talking about. (Apologies if this isn't considered appropriate.) When you write like that, plug away!
On behalf of the Future, then - please ask for a little more for yourself. More than death. It really... isn't being selfish. I want you to live. I think that the Future will want you to live. That if you let yourself die, people who aren't even born yet will be sad for the irreplaceable thing that was lost.
So please, live.