When everything is divided into subatomic particles, I’ll be satisfied simply knowing that one: we knew that subatomic particles existed and that we could predict the future of the universe, and two: that I, somehow, have effected those particles in such a way that they are in a slightly different position that they would have been had I not existed…
To continue on someones comment above, I once had a teacher that challenged every student to prove to him that the human race was special, that we could do things no other life form could, and no one could prove it. Other animals have social skills, others have technology, and humans haven’t been around nearly as long as the dinosaurs were. And therefore, he said, since we’re no better than any other life form, we shouldn’t mind being wiped out, we’re nothing better than the rest of life. But life is a beautiful thing to begin with. Would life be so beautiful without death? Would anything be worth its own existence if it was permanent? I think not. I believe the end is what makes everything worthwhile.