A commonality that I've noticed among my acquaintances who are religious or atheist is that they tend to be Judgers; which I suppose makes sense since the function seems to come to conclusions more readily than Perceiving. With atheism, the belief is that in accordance with our current understanding of science, it is sufficient to conclude that no god/creator exists because if it did, then we would be able to prove it. Likewise, religion provides believers with conclusions and in many cases, discourages asking questions. Faith itself depends on coming to a conclusion about a particular issue.
Just out of curiosity, are you a judger or perceiver and do you consider yourself an atheist, agnostic or believer in God. I assume somebody will complain about the options being too narrow so feel free to elaborate on your particular beliefs.