>Look at Germany, it's pretty stable if you are a wage earner, especially if you have an engineering diploma. They don't make more kids even though they are safe, and they have generous paternity leave.
Even for those stable engineers, it's hard to afford a home. Also you start earning money late at 25, because you needed those pesky degrees. Now you are 30, have a modicum of money, and want to live a little first. So you have fun until 35. Now you're looking for a life partner, you find them at 40. But you need to be financially stable, so you save up for a downpayment, you wait a few years until 45 to start a family.
You now notice you can't have kids because you're too old. The end.
Even for those stable engineers, it's hard to afford a home. Also you start earning money late at 25, because you needed those pesky degrees. Now you are 30, have a modicum of money, and want to live a little first. So you have fun until 35. Now you're looking for a life partner, you find them at 40. But you need to be financially stable, so you save up for a downpayment, you wait a few years until 45 to start a family.
You now notice you can't have kids because you're too old. The end.