I wonder who first got it into their heads to "prove" God? Scientific proof requires physical data, so by definition, God cannot be "proved".
God is described as the perfect, or the ideal.
But the evidence shows God is far from perfect. Even the story of the Flood is an admission of God's complete failure. He admits creating man was a blunder, so he kills them all off in anger.
What good religions do is point to the perfect or ideal way of life.
Then that leaves out Christianity which is based on "Your life will suck, but your afterlife in heaven will be much better". Christianity also teaches that no matter how bad you are, if you believe, that is what matters.
It's about teaching the ideal Good...not the good enough.
You don't need a God to be good. As a matter of fact, religion has created a lot of war "My God is better than yours"