Why are a lot of religious people so oblivious?

Okay, so I hate directing this question at one religion, but just wondering. I guess I would be considered Atheist, but I don't like defining myself with barriers. Yet, I was attracted to a Christian youtube channel that was full of Christian music videos and I was just amazed that the people almost seemed hypnotized. I guess to me it is not even a question of how I was brought to be, and it in no way involved a god. So, I guess I am just wondering how it is that some people can just be so incredibly oblivious to everything. I am not saying this includes all Christians, or religions in general, but I just do not understand how people can deny so much evidence backing up things like the Big Bang and evolution.