I think we are still a very young uncivilized violent greedy ignorant superstitious species.So you're an atheist too. You don't believe the other 999 religions either.
They all think they are the one true religion too.
I'm a weird kind of atheist. I think religion is powerful and beneficial. I think Christianity and Mormonism are the two best religions on the planet in that order. Excluding Hinduism all religions seem to utilize Jesus in their teachings. As a Christian this says a lot. As an atheist this says a whole lot more. Christianity has a phenomenal philosophical system. Mormonism has an unimpressive philosophy (Machiavellian) but it has more functionality as an organization. Mormonism and individual Mormons have more discipline than Christianity and Christians but more flexibility too. Joseph Smith wasn't a dummy.
Yes religion served a purpose and still does. It's like saying look how good christianity is because of mother Teresa, but then why do we still have poverty? Will we in 1000 years? I hope not.