To properly answer that question, you would have to think of all the implications this scenario would have on our human nature. No religion would perhaps imply one of the following: 1. Humans would be much more rational, less emotional. Ok, that could be a good thing albeit a less exciting world. 2. Humans wouldn’t care as much about discovering truth or meaning, hence would never had the need for creation myths/personal gods/religion. I wouldn’t want us to lose this aspect of humanity.