These ideas were all formulated back when people didn't know any better, vestiges of the pre-scientific age if you will. That's true for the older (goat herder) religions. But we have the new religions of the scientific era -- the Earth!Firsters, etc.
I'm afraid the fanatics will ever be amongst us.
Regarding the earth firsters. I think I would classify their believes as more of a philosophy and less of a religion.