Is China's traditional concept of "raising children to prevent old age" moral?

The essence of raising children to prevent old age is to regard children as economic tools.

This reflects the characteristics of China people: people cannot be responsible for themselves, but need others to be responsible for themselves.

But raising children for old age is not a good tool in modern times.

There are two traditional cornerstones for raising children and preventing old age: the stable "family system" created by the hukou system and the "filial piety" of the spiritual system.