If the world won't have any children, it will be degrowth to zero in a lifetime. One child for everyone is enough to halven the population, according to my napkin math. Even two children is okay if you're ready to pay extra. You just have to not turn your family into a spawning pool and kids will be okay.

The problem is there, regardless of anyone who keeps their head in the sand. Humanity will meet the limit, and people will be unable to afford children. There's no if, there's when. The only question is whether future-we will be able to have 2, 1 or 0 kids on average, and how much fucked the planet will be at the point of realization. If your vote goes for "0 and very fucked", make sure to teach your kids to not whine about it later and to keep the pride.

Not that it's any of your goddamn business, but yes, I have decided to not have kids, for multiple reasons.