"So maybe I might conclude that fundamentally religious people are simply epileptic or maybe they just prefer to listen to their emotions rather than common sense. It might also be possible that religious tendencies are genetic."
I feel that statement was rather rude at the very least.
About the creation story.
I don't believe that literally. It's a nice creation poem.
It was writen for the people of the time that had no notion of science.
I'm a creationist, if that's even a word, as I believe in a Higher Power; call that god if you like, that created everything in order and balance.
It's imperfect humans that screw things up and make war, pollute our world, govern with corruption and more.
It's pretty well established in the psychological world tjhat humans have a need to believe in something greater than humankind.
I won't cite anything as I'm sure you are capable of reseraching whatever you want to.
I have no idea why you feel religious people have a brain disorder or are overly emotional.
There are many scientists that are religious.
There is research being done looking for the "god gene", the "god particle" and much more.
Science has shown thru the discipline of archeology that many things claimed in the Bible have a basis in scientific fact.
I doubt God picked up a handful of soil and said "poof! You're a man", etc.