yes you might be right, I may have rushed to a conclusion. Multi-generational is clearly our natural state, our evolved state. Only last hundred years since we atomised the family, begins to make sense why we are dying out
My ideal is grandparents a few houses down, within a couple minutes walking distance.
These days, not only is the world population more urban, but people are also more consistently aware of the inequality problem. People are realizing they have no hope of providing the best opportunities for their children, and are deciding not to have them. I don't see that as a bad thing. Voluntary population decline might be the best outcome for humanity at this point, at least until we get our political, economic, and ecological shit together. We don't need 10 billion humans to be on the planet; we need to get through this era of war and capitalism without making ourselves extinct.