What if God was proven to have never existed?

[Drew_2013]

That just means the evidence wasn't that persuasive, doesn't it?
That should motivate you to try and find better evidence.

If either I or atheists had better evidence we'd have put this question to bed along time ago. Even though some people promote the notion the Holocaust never occured or the US didn't land on the moon, no one seriously debates those issues because of the overwhelming evidence in favor of those events having occurred. There have been a multitude of beliefs previously held that have been discarded because of a preponderance of evidence against such notions. If there was as much evidence against belief in God as other abandoned beliefs the majority of theists would abandon belief in God also. Belief in God is not strickly a faith proposition or an irrational belief. I wouldn't characterize the belief we owe our existence to mindless non-god forces as irrational either, nor would I say there is no evidence in favor of such a belief, but that's because unlike most atheists...I'm reasonable.

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It's similar how if there is concrete evidence free-will doesn't exist, or morality is a delusional concept or self is a delusional concept, etc, I would hold on to faith in them despite the concrete evidence.
If I was not in such cognitive dissonance of that knowledge and acknowledged it, I probably would be cognitive dissonance of the knowledge that we need God for some properly basic beliefs and concepts like morality, self, praise, perpetual identity, human rights, justice, etc...

If freewill or volitional thinking didn't exist it wouldn't matter how much evidence there was in favor or against such a notion since if true there is no volitional person who can weigh the evidence pro and con. There also wouldn't be any reason to believe what anyone says about anything because they had no choice but to say it anyway the truth of which wouldn't matter.