At best, you have shown that religion is useful for keeping people moral. (A debatable position.) You have not shown it to be true. And you are even farther afield from showing miraculous creationism to be true. A belief in a Santa Claus who knows who's naughty and who's nice is useful for keeping children good (at least in December). It does not make Santa real.
I think history shows it to be true. Look at what has been going on in Africa since independence. The numerous amounts of mass murders that have occurred just about everywhere there. Look at the actions of Communist governments, at the actions of Nazism, at the actions ot the French revolutionaries, at the actions of the savage hordes from Asia, at the actions of the followers of the evil prophet Mohammed. Look at the total disregard for life shown by all the above and you will have your proof.