A lot of times, I have been baffled by the fact that many people who work with technologies and ideas that are fundamentally rational are theists (in the organized religion sense) and/or have religious tendencies which can, at least in theory, be knocked down by elementary logical arguments.
The truth is, its not baffling at all. The assumption about logical people is very binary and wrong. We have personal irrational biases which are tied to our identities in a lot of cases, and its not unreasonable for them to control our actions and thoughts. Now, how far can we change ourselves to avoid damaging all that is good is a different question.
An illuminating read I recently found is My Evolution, a short comics on religion and science. One of the things to take out from there is how often we tend to overestimate the split between theists and atheists and their assumed overlaps with rationality.