I'll hit this one too before I go.
I understand the mentality, but I know I wouldn't look at it that way. After embracing the idea of eternity, 80 years is nothing. It wouldn't be special to me, it'd be a quick race to obscurity. Everyone I look at will die, and everything I see or create will wither away to nothing and be forgotten. We'll all be those old graves that you can't even read any more, so how special could a measly 80 years really be?
Sorry to bring it down, but that's just how my mind works. It's why I refuse to completely let go of God even when my faith wans and dangles by a thread. There are other reasons, like I said, but this is one of the bigger ones.
But hey, if you can find life special without God, I'm happy for you