I don't believe in any god because I have recognized that gods only exist because humans wish to believe in them. Weak humans need a superior being that cares about them and rewards them in an afterlife. Aside from this wish there is no evidence in nature that a real god exists. When scientists looked for primal causes they always only found nature laws but never a hint of any acts by a god.

Besides if there were a god and he were interested in being believed in, he could easily give humans a proof of his existence. But since no such proof was ever given, obviously no god exists outside the mind of his believers.

So I think this is not a matter of belief, but just of knowledge. We just know from science and from logic that no god exists. God believers may get some comfort from their belief but pay for this with having to twist their mind more or less and with living in contradiction with knowledge and truth.