This just struck me as I observed a middle aged couple with their young daughter.
Even from a secular point of view, one child families are so unnatural.
There is a natural hierarchy in all things. Whether it is a tribe, a company, or a family.
Each of these have something in common and that is that there are less chiefs than indians. Do you know any company that has more directors than workers on the fatory floor?
I don't.
So that is why it feels and looks so wrong when you see to parents and one child!