An even less popular opinion: if you care enough about climate change to not have children you should have children. The alternative is that only people who don't care about climate change will have children.
Anyways, the fertility rate has dropped very quickly all over the developed world and the world is turning developed quickly. I'm not saying that will solve climate change but it looks like overpopulation is at least going to be solved.
if you care enough about climate change to not have children you shouldhaveadopt children.
This will reduce the population increase, while at the same time help children already in the world and being dealt a shit hand. It's not an easy role to take, but if it makes one child happier then it's worth it.
It's a product of the environment, which the parents set. So children of people who care about the environment is probably going to also care because that's what their parents teach them.