This is just your opinion. I think maybe climate change is the primary reason to not have kids in like .39% of people not having kids, but one of several or man

This is just your opinion. I think maybe climate change is the primary reason to not have kids in like .39% of people not having kids, but one of several or many reasons, doesn't mean much. Not drinking gasoline because it tastes bad is a reason I don't do it. Not the primary reason, sure, but still one of the many reasons. Same thing here, there's a long list of reasons, and climate change is one of them for many people.