Boys were taught a trade or a skill so that he can go out into the world and work his ass off for years to provide for any offspring or other eventualities.
Girls were taught how to take care of the children and the house.
Do you think women today realise how cushy their mothers and grandmothers had it?
Any sensible human would choose the female role any day.
You have no clock to punch and if no kids or kids in school your day up until 3pm or 4pm belongs to you. With kids in the home you can spend the day making sandcastles if you want. Partner/husband comes in beat from work. "What did you do today dear?" "Oh, this and that, played with the kids in the park this afternoon as it was a nice day" <---like that is a job.