South Park did an episode a long time ago where Cartman freezes himself and goes forward in time and ends up in a future where different atheist factions are struggling against each other. When I first saw that episode I was fascinated with it. Sure, it was funny, but it really sparked my imagination.
Later on I saw a series on HBO called "raised by wolves", which to sum up is about a war between atheists and creationists (called the mithraic). The war ends up destroying Earth and humanity leaves to colonize a new planet and ends up bringing the war with them to the new planet.
I'd like to find a book that explores this. I think it would have to take place in the future.
by mcsquirgle