I'm amazed. I totally can't understand this kind of thinking (which you believe to be human nature)....everything he says about religion is so self-evident to me that I find it astonishing that there are people in the world to whom it isn't....In fact, I hold the belief in God for little less than a mental disease. That is because there is virtually no evidence to support the existence of God, and a lot of evidence that seems to suggest that God doesn't exist....However, should I be shown proof that God exists, I would accept it without any resistance whatsoever.

If you really believe that then you can test this with hallucinogens; in a non-trivial fraction of users (in good settings), they induce mystical or religious experiences and so there's a good shot they would do so for you. Have such an experience and still maintain your atheism, and maybe I will credit your claims to be atheistic based on purely rational grounds. Otherwise, you just look to me like, say, SF author John Wright: a strident atheist until he had some hallucinations after surgery and immediately flipped his views to become a strident theist.

Seriously. Standard hallucinogens like psilocybin or LSD are easily obtained, cheap, and safe for at least a few doses.

What's stopping you? Don't you believe your beliefs why you don't believe?