I definitely don't believe in the stuff taught by most religions, certainly not Abrahamic ones. I don't believe in gods or goddesses or magic. Whatever else may be true in what we consider the "supernatural," I'll never know - and neither will anyone else.
So that leaves only this: What do I want to leave behind since, by default, I don't believe in my own immortality. I think what Otterbearcat said: kindness, compassion, etc. Can't go wrong with that legacy - and I want human beings to thrive. But that's not spirituality; it's the only rational choice, and it's genetically programmed into us (see Dawkin's "The Selfish Gene" for details).
