As others have said, your analogy is just plain silly. Since atheism is not a 'club' or a religion, and therefore carries no established creed, I can't speak for others, but personally my evidence that the God of Abraham is not the so-called Almighty comes principally from the Old Testament. Jehovah, Elohim, Allah, or whatever you want to call him, wasn't omnipresent, he wasn't omniscient, he wasn't omnipotent, and neither was he loving and compassionate. All of this we are encouraged to believe, but upon studying the texts without hindrance of pre-conceived ideas, or of wishful thinking, it quickly becomes apparent that this God was a narcissistic evil psychopath who ruled through intimidation and fear - and, by proxy, still does.
To quote Randolph Churchill who had never read the bible, but accepted a challenge from Evelyn Waugh to do so:
"Isn't God a sh!t'.
He got it in one!
Moving on, the Gospels are a mixture of earlier writings and legends, altered and re-written countless times to include 'evidence' of prophecies supposedly fulfilled - all to suit the dubious purposes of the early church. Since the Koran is another poor concoction of legend and writings from earlier civilisations, as a source of serious research, I discount it entirely.
Although I think there is probably some historical truth in both the Old and New Testaments, it is quite ridiculous to attribute the unknown to the unknown, which, along with outrageously manipulating the stark facts plainly evident in both books, is precisely what religion does.
I very much doubt that a creator exists, but if there is such a thing, you've got the wrong bloke because it is not the God of Abraham. Religion is the greatest lie ever told.