Coercion and psychological manipulation not so much force. That's what Christianity and Islam are all about ultimately that's why they're the 2 most prominent religions on Earth. They both have the same basis of eternal reward/punishment system though Islam is about obedience to authority for reward and Christianity is all about sin and guilt, and ultimately obedience to the authority that will alleviate all this. Set up the problem then provide the solution, carrot and the stick.
They may be seeking something for whatever reason but religions like Christianity or Islam is very effective at levering itself in as they employ some very clever psychological tricks and they both offer immortality after death. No other current day religion really offers such a thing, at least not a bodily resurrection. That's kind of a relatively new thing, possibly the Ancient Egyptians believed something like that and this fed into the later Roman Mystery cults and eventually into Christianity/Islam. It was never in Judaism or the Old Testament at all, when they mention heaven they're literally talking about the sky and hell/seoul is the under the ground.
Well yes no-ones perfect but to me that's a good thing. What would happen if you literally removed everyone "sin"?