I guess it's just about the virtue of integrity. Even casual house parties attract integrity-less people who will destroy your carpet by bringing food into car

I guess it's just about the virtue of integrity. Even casual house parties attract integrity-less people who will destroy your carpet by bringing food into carpeted rooms and then trampling it over without seemingly noticing. That's why it's good for every human on the planet to have experience with cleaning various things, so they know how much work it is when they make a mess.