Children are not economically viable.
You may be half joking, but I’ve discussed this many times with my partner. Society, by today’s definition, do not reward at all having kids. However, for a society to keep going you **need ** children, so wtf is supposed to happen? No children, society just grows old at at some point you have a massive decline in the younger brackets? And then is just old folks yelling at clouds? Also, anothet detail, the mono parental lifestyle we have nowadays is actually quite recent. And I do think is very much impossible to have the expected amount of children on such system

there’s a lot of negative feedback loops in nature (it sounds negative but is actually a positive thing). it means that when you have a tendency going one way, then that creates a counter-pressure which makes the tendency go the other way.

so if people have less children today, that somehow will make it more attractive for future generations to have more children. in the end, it will oscillate (go up and down) until it stabilizes around a stable value. so no worries, it’s gonna be fine.

Worst case it will oscillate and not stabilise. Then you get generations with a lot of people and generations with very few people. If you have for example pension systems build on the expectation that you have at least a stable population, ideally a growing population, then this will cause a lot of problems, you can see this in Germany for example. If your population oscillates over decades then you need to adapt your society, your government, all the systems to this oscillation.

Feels like more hubris to think humanity is any different from animals in this regard.

In nature this does not always happen.