Correction, please ?
I think when the mother spend most of the time working outside the home, it impacts on how her children raise in terms of how much desired and honest feelings they will acquire, and how big the shortage will be in their emotions. In summary there is no someone can raise the children in an optimal way like the mother.
2) letting your parents to live with you when they get older it's kind of returning the favor. You should take care of them as they did when you was a kid.