It really depends on your definition of crazy, if being crazy for God is bad or not, and whether it could still be called crazy if everybody believed it (something crazy that is). My personal view is that believing in God is far from crazy, in fact it's completely natural. The idea that the universe was created with us in mind is a staple aspect of what it means to be human (and what a human thought that is). Maybe the idea of a God helps control the anxiety life can bring, or provides a concept of final judgement, or maybe one of the Gods is the real one and all the other's followers are in for an infinite surprise come death. We can at least say it's an almost universal human characteristic, and maybe that's enough. Also, I think it's safe to say that talking to a God is completely normal, it's when a God talks back when sanity might be questioned.

Do you think theres a lot of Christians that don't really believe it? I think there's a difference between believing something and acting as though something is true. Maybe the reason why people don't seem to be amazed by those accounts is in the nature of the stories they narrate. The world ancient writings put us in would certainly be a wacky place to live, with all these miracles happening all over the place.