The whole paradigm is wrong. We are not less imaginative than a believer. We are less inclined to "have faith". We are less gullible. I can imagine quite a lot about how the Universe was made. But I don't live my entire life according to the fruits of mine or someone else's imagination.
Maybe there are much more advanced civilizations in the Universe than us. Perhaps advanced enough to bend the very structure of the Universe itself. Compared to us, these civilizations are gods. If a chicken could think, she would probably be amazed of our scientific progress and consider us to be gods. But until seen evidence of their existance, these "gods" do not exist. We are all limited by our senses, not just atheists. In any case, it is clear to me that the God of the Bible is nothing but fiction. A fairytale character.