How did Kant put it? God is a morally useful fiction?
Wittgenstein:
"A religious question is either a question of life or it is (empty) chatter. This language game--one could say--gets played only with questions of life. Much like the word "ouch" does not have any meaning--except as a scream of pain."
Everything that really needed to be said on this topic was said on the first page. My take on it at this point is that the best you can do to "evidence" (strong) atheism is show that reality itself contradicts the idea of deeply involved, personal gods, unless additional, often self-contradicting ideas are introduced to try and explain their apparent absence.
It seems to me that if God is infinite, then God would also by definition be self-contradictory: existent, non existent, nothing, everything, rational, irrational, knowable, unknowable, mysterious, plain in sight -- all of that shiz, none of it, less and more. Wittgenstein said God is unthinkable. And also:
"I want to say: If eternal bliss means nothing for my life, my way of life, then I don't have to rack my brain about it; if I am to rightfully think about it, then what I think must stand in a precise relation to my life, otherwise what I think is rubbish or my life is in danger.--An authority which is not effective, which I don't have to heed, is no authority. If I rightfully speak of an authority I must also be dependent upon it."