What benefits? As Robert Ingersoll said, (paraphrasing): Religious people who are good credit their religion with their goodness, but, really, those people would be good anyway.
We will still have love, friendship, altruism, purpose, drive, joy, etc., even without religion. Contrary to popular misconception, atheism is not all joyless hedonism.
Name any benefits of religion that cannot be achieved without it. Religion did not create good and bad - man was defining those long before the first holy book was ever written, before the first law was put in the books.