If someone had a definitive proof that God did not exist (an argument so powerful it became universally accepted, like when Copernicus proved that the sun did not orbit the Earth), which of these scenarios would be most likely: 1) Most people would run out to have drunken orgies, and in general, live lives of utter debauchery; or,2) we'd enjoy an age of unprecedented enlightenment because mental energy would no longer be wasted on the distortion of a grand delusion; or, 3) A combiation of both A and B.
This is a bit more of a sociological or psychological than a philosophical question. My personal experience provides virtually no basis for knowing the answer. My guess is that, as with Copernicus, the proof would take some time to catch on. During that period we'd see a lot of people, particularly those heavily invested in religion, attacking the proof, attacking the person who invented it, and attacking those who accept it. There'd be fatwas against purveyors of the satanic proof; somehow it would be found to manifest the mark of the beast or correspond to some dreary prophecy in Revelation . Well scrubbed suburban homeschoolers would recite its flaws in between trips to the mall. A formerly unknown Danish newspaper would be catapulted to the center of the world's attention for publishing it and then be charged with racism for employing Arabic numerals in doing so. Pat Robertson would condemn the proof as another effort by the homosexual, secular left to undermine religion, morality, and...