Not sure why not having kid is such controversial. I guess people just can't be not selfish, they will find any excuse. People will do anything that does not change their lifestyle, basically all of which are useless compared to what is going on in climate crisis.
Not having kid is the most effective thing anyone can do.
You can just adopt instead, raise them to be ethical. It should not be so controversial. You can be a parent without giving birth.
Also bringing a kid without their consent to this dying planet and then make them fix it (which due to their ancestor's screw ups and comfort) looks like a punishment by parents, pretty selfish. These kids already have jobs to perform before even born. I sure don't want my kids to suffer this disaster and without their consent.
Data conclusively indicates real-world climate change is tracking RCP8.5, the IPCC’s “worst case scenario”.