Not sure why you’re downvoted. These are absolutely the reasons. Unfortunately in some developed nations people are worked to death and buried under debt so they decide not to have kids, or are simply not left with a choice at all. Also, well educated societies can also see the world heading in a bad direction, economically, environmentally, and/or politically and decide to be responsible and not being a child into such a world. Unfortunately, the latter means we leave the world to an ever increasing population of idiots.