Why so much hatred between the three Abrahamic religions when they have so much in common?
I think you’re right, and although I’m agnostic, I think there are many great moral values that all 3 of these religions share — for example, compassion, and the notion that God demands justice — that should make them compatible. However, a good argument can be made that one thing that all 3 Abrahamic religions share is an extreme intolerance for other faiths. As historian Edward Gibbon saw it, in his famous history of Rome, it’s arguable that in the ancient pagan world, the common people saw all religions as equally true; the philosophers saw all religions as equally false, and the legal magistrates saw all religions as equally useful — i.e. equally useful in controlling the common people. But Judaism, as Gibbon saw it, then invented the idea of a “jealous” God, a God who could tolerate no rivals, and soon enough Jews were claiming that their God was the only real one. Judaism had limited ability to influence the world, partly because of the limited number of Jews at the time, part
