>>Consider that it is normal to live with parents in many other countries.
The normalness of living with parents correlates with the country's wealth per capita. Since most people in poorer countries cannot afford to own houses, they end up sharing houses their families own. Over time, the commonness of this occurrence becomes accepted as the norm.
It is NOT a good thing that the phenomenon is becoming common in America, because it indicates stagnating or declining wealth levels among the middle class.
It is cultural. In countries like India, Japan, China where collectivism is valued over individualism, it is acceptable to live with one's parents. In fact, even celebrities with a lot of wealth live with their parents.
Does collectivism correlate with a country's wealth per capita? Maybe it does!
The normalness of living with parents correlates with the country's wealth per capita. Since most people in poorer countries cannot afford to own houses, they end up sharing houses their families own. Over time, the commonness of this occurrence becomes accepted as the norm.
It is NOT a good thing that the phenomenon is becoming common in America, because it indicates stagnating or declining wealth levels among the middle class.