Umm from an attempted non-bias side, Atheism (FYI I am Roman Catholic), they seem to rationalize everything they believe in. For example, since to them the probability of God not existing is greater than a guy who created everything, they rationalize that there is no God. Islam is kind of shaky because part of the Qur'ran was written by "Muhammad the Prophet" while the other half was made by "Muhammad the Statesman". The Statesman wanted order and structure, while the Prophet was much more what we would call a preacher of a new faith. I can't accurately explain the vibe I get from "Muhammad the Prophet" accurately, but I can say that the Statesman was much more structured. We talk about this a lot in Philosophy, it is pretty interesting to be able to separate the two. Sorry if this appears to be biased or inaccurate of Islam, it is just how I try to view it from a purely philosophical perspective. I don't want to offend anyone!!!