Well, they have free time for "everything else" too.
E.g. kids can just go out and play or go to afternoon classes themselves, they don't have to be constantly supervised by their parents or be driven everywhere, so they get more freedom, and parents gets more self time, for one example.
E.g. kids can just go out and play or go to afternoon classes themselves, they don't have to be constantly supervised by their parents or be driven everywhere, so they get more freedom, and parents gets more self time, for one example.