"Many religious apologists argue that explaining the evolutionary roots of belief does nothing to undermine God’s existence. But it does. As Nietzsche understood, if you can explain the origins of religious faith in biological terms, then “with the insight into that origin the belief falls away.” Sure, if we possessed incontrovertible evidence for God’s existence, then the genealogy of belief would be irrelevant. But in the absence of such evidence, showing how religious faith can arise without any supernatural input genuinely weakens its credibility."
January 1, 1970
https://en.wikiquote.org/wiki/Maarten_Boudry