Well, it just seemed to build up over time. Reading various things. Growing up Hindu in a Christian world. Learning about Native American ideas on creation and religion. I'm sure dating a very "fundegelical" christian had something to do with pushing me in that direction. But in the end, I realized that whatever the answer to the ongoing debate is, the debate itself seems pointless because we'll never have any definitive answers. And in the meantime, there are things to be done in the world that require real work.
I am not totally sure I'm an atheist. I generally think god does not exist. But whatever the answer to that question is, I tend to agree with the "ignostic" or "nontheist" stance which is: the question of god is meaningless because it has no verifiable consequences. I came to this realization over the course of the last couple of years. I'm not sure what spurred it along. Probably the current political climate and general lack of critical thinking skills. What about you?