Household Chores

My kids are learning household chores! A big hurrah to them! They are taking turns on cooking rice, rinsing dishes, making vegetable salad and making tea. After a couple of days doing their chores they started asking me why they have to do it and what about me? I thought it's a funny question that deserves a point blank answer so I told them that we can exchange jobs that they provide food, clothing and shelter for me and then I will do their household chores. And then she complained that she's too young to do something a job like earning money so i told her that's why you do something simple things like household chores.