The illegitimacy of the Christian bible, corruption of the Catholic Church, secularist views being more influential than religious ones, and never being indoctrinating into a religion are probably among the largest things that make me an atheist. Some hindu and Buddhist views interest me, and while I could align myself with Buddhism and remain an atheist, I'm not as invested into it's scriptures and background as I would want to be to confidently convert. Furthermore, I lack the belief in a god, and haven't been shown anything to dismantle this lack of belief.