BTW, before any of the dudes here say "i'm sure all women would share my breeding kink if material conditions were better", fuck right off you incel weirdos.
We regularly see high birth rates in economically over-exploited nations simply because they have no safety net besides ones' family and because women are deprived of reproductive autonomy. OTOH, low birth rates are, in fact, also an extremely common thing in AES countries were people are economically secure enough to have kids, it just turns out that a lot of women are not compelled by biological predestination to serve as your incubators but actively choose to be child-free. The DDR made it very easy for women to raise children, to be financially independent from their spouse, it provided affordable housing and near-total security from unemployment, it had daycares right next to the factories, an excellent school system etc. and it still had lower birth rates than West Germany. Because it also had free birth control and freely accessible abortions fully covered by public health care that were not socially stigmatized at all. And a ton of women used that option because they just did not want to have kids even though it would not have been a financial problem.
And that's A GOOD THING. Women doing reproductive labor out of obligation and societal pressure is something that needs to be actively fought against. It's downright scary how normalized the idea is on this site that you just need to present a girl with a house and a breadwinner husband to turn her into your baby making machine because you AmeriKKKans all have internalized so much 1950s-style patriarchal propaganda that you genuinely believe better material conditions will lead to the nuclear family becoming the core social unit again. As if that shit wasn't just a brief, hyper-specific historical fluke that was a violent counter-movement against the vast amount of women who had begun to realize their capabilities for independence while the men were at the frontlines of WW2 and they kept the labor force going at home.
Couldn't have said it better comrade