Would it be better if there were no religion?

Nah because sadly most people cannot think for themselves. Many people need the guidance of religion. Yes, there has been a lot of terrible things because of god and religion, but there would be a lot more problems without them. Humans will always be human, and to be human means to be imperfect-so with or without religion/god people will always f**k things up. That's just the way it is.