I think this is exactly right. It's not just environmental disasters either. There are more existential risks looming than ever before. The relative peace of the post-WW2 order kept things relatively calm and quite prosperous for decades, but everyone can see that coming to an end right now.

Maybe things will work out fine or even great in the medium term, but I think a lot of childbearing age people are looking around and thinking the next 30 years might be a lot worse than the previous 30.