Picture a family of nine children. Now imagine cooking dinner every night (no cheating with take-out), making school lunches (and getting everybody up and out), doing mountains of laundry, helping with homework and changing thousands of diapers for years, and years, and years.
As the oldest of nine kids, I don't have to imagine it. I watched my mother do all this and more every moment of every day of my childhood. She never stopped, except to eat after everyone else had eaten and fall into bed exhausted at the end of the day.