the women need all those kids individually if its 50/50 men/women split on reproductive everything (so pop is 50/50 split naturally and everyone who can pair pairs)
in a situation like we're in, where we may see for the first time in a long time a "natural" shrinking of total global human population (maybe we won't, though), i dont look at it like this.
the only people who need to reproduce need to reproduce right now. Theres a lot of totally dysgenic blobs out there who dont need to shit out another dysgenic humanoid creature (of course we all know how it goes, idiocracy touched on this).
but my point is that its the burden of every guy worth his salt to go out and produce 6+ offspring, or whatever the number is. it can be 1 kid with 1 woman for all of the offspring, or not, but either way, its less on the women giving birth to 12 children, and now more of a burden on a man who is worth it to go out and make babies. its so easy for everyone to pair, theoretically, we dont need losers making more of themselves any longer, theres enough of that. 1 hot chick can have 1 hot kid, a guy can be the babydaddy to like 6+ women, and that's going to be healthier for humanity moving forward for a while. it seems more natural too in some ways.
times are flipping which is okay. hopefully these trends eventually mean ugly fucked up people are producing way less, and fit men are fucking hot women making a new stronger generation of people (even if it is smaller in total size). i really think that is how it will ultimately go, we're not gonna retard ourselves to death as a species, theres too many strong people and communities spread far enough apart that corrections will always occur to some degree.
dont worry, just get fit and whatnot and go out and make babies with as many women as possible - if youre worth it.