On Breeding Trends Amongst Humans

[Geno]

Why is it that more-developed, intellectual, intelligent, refined and civilized peoples stop breeding? Whereas, to be frank, dumber, more rural, primitive ones seem to out-breed them?

Religious people practice withering. Also, Muslims have multiple wives whom they can knock up. Here in the west, people use condoms and birth control, and if that doesn't work, they abort their children.