First of all, Always, my name is David, not Dave. There's only one person in the world who will get away with calling me Dave a second time ... and you're not it.

Second of all, why are you sorry? You shouldn't feel sorry for expressing your opinion. I certainly don't. 

And, of course, you can't prove a negative. But, the only basis for the existence of an entity named "God" is the assumption of a fact not in evidence in the first sentence of the Bible. That doesn't do it for me ... nor would it stand up in any court, including the one that says "In God we trust."

EOD