God is Schrodinger's Cat.
You can't know there is no God because God could be hiding.
I can't know there is a God because I can't prove it in a lab.
So it is a choice, a true choice.
50/50
Belief or disbelief.
In the case of God not existing, disbelief gets you nothing, belief gets you psychological benefits.
In the case of God existing, disbelief gets you nothing and possible punishment, belief gets you the same benefits plus immortality and God helping you.
So, why would any right thinking person choose to not believe?
Emotions?
Woman brains?
Who knows.