Turing, Higgs, Curie. All atheists. Religion has no bearing on whether or not someone achieves greatness in their life. In the past, people often were "religious" simply just to get the public to listen to them. They almost threw out Newton's life work just because he didn't believe in the "trinity" of the christian god (note: he was very deeply religious/spiritual and believed his work was proof of intelligent design.) Bottom line, we're moving away from religion in our world because it provides increasingly less social value and causes more and more issues. The way I see it, religion is a terrible curse on our world that only brings war and distrust. If you can't keep it in your chapel then you're an evangelist and your morals are fundamentally no different than the colonizers of old.