The floor is open, what do you think? Is the economy really reducing the family population?
You have presented a beautiful reality, but it does not work the same for everyone, there are some exceptions. And it is better not to take exceptions as an example. People in villages have more children than in cities, although people in villages earn less than people in cities. However, good economy and physical capacity are important behind family size, similarly, economy also works behind family size. Most educated people prefer small families and if you do a survey, the population of educated families is less. On the other hand, the population of less educated and lower class people is comparatively more. So it can be said that the effect of economy is one of the many big reasons for low population or family size/smallness. And if education and physical capacity are excluded, I think economy is the reason.