I for one didn't accept the premise that God exists because I had evidence. That's backwards and leads me to wonder if you even realize how theories work. In order to test your hypothesis you have to operate under various assumed premises which you know you don't have evidence for.
You would have every person stuck in the endless regression of proofs of proofs, proofs of proofs of proofs, and proofs of proofs of proofs. There comes a point where you have to just accept something as reasonable even if you can't bottle it. The assumption of God is made reasonable at a basic social and biological level, and it's a premise from which many tested behaviors prove to be beneficial.
I think militant atheists such as yourself are just uncomfortable with anyone who doesn't hyper-qualify every word they say with "I believe" or "in my opinion".
Your behavior on this forum doesn't represent atheists as well adjusted members of society.