If you were Satan, and you wanted to create a religion that would cause the most mayhem, murder, discord, and hatred among mankind, what would it look like? A bunch of folks out in the woods at midnight sacrificing small animals or the occasional baby if you could get one? I don't think so. You're never going to get more than a few weirdos with that.
So what would really work? What would it look like?
As religions go, islam is perhaps, marginally more civilized than the death cults of the meso-American indians. Perhaps