Well, if you take everything in the Bible literally, then sure there is a lot of silly, implausible stuff in there. But a lot of people, including me, look at most of it like fairy tales. Maybe there it's based on a nugget of truth somewhere, but its mostly there to teach a lesson.
The problem I have with atheists is that a lot of them tend to be assholes who go out of their way to disrespect people who are religious. In their own way, they are just as evangelistic as any preacher, except they are evangelistic about the "superiority" of their own disbelief. Also, in the last century, atheists were responsible for a whole lot of mass murder. Examples are Stalin, Mao, Pol Pot, and probably Hitler. Hitler probably kept his Christian identity for political reasons, but he didn't practice (to put it mildly). And if you look at ideologies, the Nazis elevated the Aryan race to God-like status. In contrast, commies tend to believe the State is God. Some capitalists, including many AMP girls, probably believe money is God.