The vast majority of the world’s greatest scientists are atheists.

If they were great scientists, they would be agnostic.

Atheists also have a belief that is not rational. Athiests believe God does NOT exist.

One cannot prove nor disprove the existence of God. Therefore, to be rational, you have to say you do not know if God exists or not.

Talk to any atheist for a while, and you may find that they are obsessed with God (believing in the non-existence, that is).

Atheism is a belief, not a rational conclusion.