The story of a slave girl

The above series describes a situation in which the world is in the grip of enormous fertility problems and few women (and men) manage to get (or get) pregnant. Therefore, a regime has arisen that wants to restore the world and multiply children, etc., and therefore takes all the women who can give birth and enslaves them for the purposes of procreation. {The series is concerned with the government taking on many more powers that go beyond this idea and in fact is corrupt and does not have only pure intentions, etc., but that is not really related to the crux of the matter} The question is, in such a situation where there is no birth at all in the world and there are no people (there are descriptions there like “No child has been born in Mexico for 9 years or something like that) wouldn’t the right thing to do be to enslave women for these purposes?
In other words, where the rights of individual freedom conflict with the wishes and good of the general public, how do you decide and what prevails over what?