It's not natural to have to suffer when we work. We're made to be productive, and yet the world we live in, there's a whole bunch of suffering. And what they need to understand as 10-year-olds, so that when they're 15 and slightly less protected, and when they're 20 and they're moving into a truly semi-independent state, they need to have experienced that memory of persevering and having gotten through hardship.