In your opinion what causes christians to believe in Jesus

[John 6IX Breezy]

Since  atheism is not a belief, or a claim, it is the absence or lack of one particular belief, they seem to be  going against that trend. In many parts of the world, at no small risk as well. 

You do not have an absence of belief. Your brain doesn't just go blank if I ask about your thoughts on any number of propositions regarding God. Your brain is full of attitudes and beliefs and judgment, with each one of them having different strengths, functions, and salience levels, and with values and probabilities ascribed to each them.

You cannot be as verbose as you are and truly think your brain goes into a comatose state when constructing beliefs.