There's evidence going all the way back to prehistory of violence and massacres between groups of humans.
I saw a video recently that reminded me that many of these violent massacres in history were done as religious human sacrifices. That is, instead of killing off all the males so that one man could have a harem, there were many cases where, after a king died, hundreds of men and women were killed to be the king's servants in the afterlife. That doesn't sound much like a "You are God and can fuck who you want" fantasy.
I still don't want to talk about religion but I think I do need to say this: I make a distinction between spirituality and religiosity.
Spirituality is your own personal relationship with whatever spiritual beings you personally believe in.
Religiosity is about forcing a particular spirituality on everyone else by inventing stupid rules dictating what foods to eat, how to eat them, what clothes to wear, how to wear them, how to have sex (missionary position with the lights off), what to say, what to read, what not to read, what holy days to observe, how to observe those holy days, what holidays to not observe, when to pray, how to pray, what rituals to follow, what relics to honor, what art to create, what art to destroy, how to arrange furniture, what jobs to work, how to wash your hands (pouring water from eggshells in a ritualistic manner), which cloths are acceptable, . . . . . . . .
Now I don't believe that all rules are stupid. There are good laws that ought to be obeyed and there are bad laws that ought to be thrown in the garbage. Good laws allow as much freedom as possible while allowing people to live in community with one another, not infringing on the freedoms of each other. Bad laws are dictated by a control freak that just wants to micromanage everyone.
It is good to know where we came from and what our genetic pre-wiring is but it is also good to recognize, we don't have to stay there. Just because we committed human sacrifices in the past doesn't mean we have to keep committing human sacrifices in the future.