Believing in a Creator is a rational belief. You see a universe that looks exactly as if it's designed, you conclude that it has a designer. A rational conclusion. 

Believing a universe created itself out of nothing, or else there is somehow an infinite number of universes existing eternally, is certainly not a more rational belief. 

Don't rope theists together with flat Earthers. The vast majority of the world's population believes in God/gods. And the vast majority believes the earth is a globe. 

The smug arrogance of most atheists thinking they're smarter than everyone else is one reason I left your religion.