People have tried to get rid of religion for quite a long time, and it hasn't worked all that well.

Of course, if people are purely material beings with no spiritual component, then they can't have real free will, and so cannot decide what to believe. What they believe is based upon the laws of physics, so it's partly determined and partly random. In either case, people have no control over it. So, someone's belief in God or your lack of belief would both have no truth value, but would merely be a reflection of the current state of the universe.

In any case, a universe in which Dawkins and Hitchens are seen as the great heroes would clearly be a parallel universe where everything is reversed from reality.