Capitalism is out of control, thanks in no small part to Citizens United, the Supreme Court decision which said that a corporation is a person, even though it doesn't eat, drink, make love, sing, raise children or take care of aging parents. You can't have a people's democracy as long as corporations are considered people.
What mothers need, as well as fathers, spouses, and the children of aging parents, is an entire national infrastructure of care, every bit as important as the physical infrastructure of roads, bridges, tunnels, broadband, parks and public works.
The proliferation of support groups suggests to me that too many Americans are growing up in homes that do not contain a grandmother. A home without a grandmother is like an egg without salt.... The emotionally satisfying discussions that take place in Chronic Pain Outreach and Depression Resources are simply updated versions of the grandmotherly practice of hanging crepe. We could eliminate much of the isolation that support groups exist to fill and save the "traditional family" that everybody is so worried about if more couples took their aging parents to live with them.
But from the perspective of the aging parent, there is no major difference between four and fifteen, except that when your child is four, his motoring privileges are restricted to little toy Fisher-Price vehicles which are unlikely (although I would not totally rule it out in America) to sue you.