We're also teaching the younger generation imminent climate apocalypse is coming, and therefore bringing kids into this dying world would be cruel, or at best contributing to the problem.
(And now there's also an AI apocalypse of some kind on the way even if the climate situation can be resolved/survived. And the ever-present threat of WW3 seems closer now than ever)
actually we've been closer to WW3 in the past. Remember that Russian false sensor that almost caused them to launch a nuclear first strike but the guy whose finger was on the button felt something was off?