People spend too much time on surface level religion and not what it actually represents. Whether or not there is a god, to think a homo sapien can arbitrate reality and denser matters is the epitome of ignorance. The people of today are the same as they were 5000 years ago, we just have better tools and methods. Take them away from a generation and we're just apes again. Religion provides a construct to detail the best ways to survive as a communal high ape, that's it. If you have faith, it doesn't matter if it's technically true or not - it's true to you, and that increases your chances of success in this life.