Or affordability, for that matter.

I see declining birth rates as a good thing. There's too many humans and we abuse our planet. If we die out, so be it. I personally have refused to have children because I don't want to subject a child to this. Maybe our population can decline to something more easily sustained in the future with clean energies and healthy foods. But right now with UPFs making us sick, climate change destroying our ecosphere, and general corporate greed and lobbying taking us for every penny we have, I do not think it fair to subject a new child to that.