Making children to pass down genes and the family name definitely fits that picture.
That’s a very metaphysical profit. Capitalism offers profit here and now.
On top of that you have the parents who have kids so someone can take care of them when they are older.
Developed capitalist countries are know for children taking care of their parents.
It can’t? Rather obvious that the “soul” of a community is defined by it’s members and the bigger the community the more mainstream this soul will become. Maybe the federation mechanic offers some solutions here, but that remains to be seen.