Not to worry.
THe barbarians of today are having children like there is no tomorrow.
THe barbarians of today are having children like there is no tomorrow.
Even the "barbarian" has a vastly declining birth rate, and they don't use birth control nearly as much as we, generally speaking, do.
What hasn't been considered is that the human genetic code is deteriorating, with the accumulation of mutations at an exponential rate, which causes the procreation rate to decrease.
The good note is that, by the grace and providence of Almighty God, strongly believing, born again families still often have a fair amount of children.