[petre]

China tried with the one child policy and debalanced its population's structure, ending up with too many men.

On the other hand in Japan and elsewhere in developed countries women postpone having kids until in their in their 30s, because they're involved in the workforce.

So, one either ends up with exponential population growth or with the elderly working until they die and younger people postponing having chindren until mid age (with all the associated health issues, both for the mother and th child) or not having children at all.

It's rather hard if not impossible to keep a middle ground. As a woman one probably has to make a choice between bearing children after you finish college or getting a degree and joining the workforce. Guess what most women's choice is?