I'm another atheist who doesn't believe in an afterlife. I don't mind telling people that if they ask, or explaining why if they want me to, but I don't advertise it. It just gets me a lot of hassle and debate that no one can possibly win.

Sometimes I hover on the line of agnosticism, because sometimes it seems like this world is too amazing for everything to have happened by chance, but I think I'll always have difficulty with the concept of an omniscient, omnipotent God. And even if I didn't have that difficulty, I can't imagine ever joining any sort of organized religion--I believe there are far too many religions and religious subsets for anyone to have gotten it completely right.