Being an only child seems to be a bit psychologically damaging. I could conjecture for pages here, but suffice it to say I believe one is better off having 2-3 children or none at all. Sure there can be situations like being raised closely with cousins or friends that are similarly beneficial, but kids absolutely must have close companions near their own age -- they don't seem to fully learn to be empathetic otherwise.
This is only the opinion of one person, take it however you wish.
I don't have any stake in this (no kids and unlikely to ever have any), but I feel like I've read that only children do better on many metrics than kids with siblings, all other factors being equal.
Therefore, if fossil fuels were banned, wouldn't millions of people quickly die from starvation, cold, and lack of medical care? Wouldn't that be psychologically damaging to humans all over the world, to watch loved ones die and worry about one's own premature death?
As someone who is supposed to be unable to be empathetic, I kinda wonder how you came to have this opinion.
Though it wasn't exactly what I meant. I just meant some people will be more and some will be less inclined to children. And that in society where people choose not to have children there will be a strong evolutionary force favoring those with a stronger drive for children.
This would essentially wipe out siblings, which could mean that we lose any associated culture?