Do Women Have to Do Housework?

Do women have to do housework?
No body says that women have to do housework nowadays. Actually,it's natural division that men work outside the house while women do housework at home. It's the difference of the physical condition between men and women decides who should work outside and who should do housework at home.
In old times, men work outside because the works outside are more likely physical works.
However,nowadays,there are many works should be done with intelligence.
And further more ,there are many equipmens showing up to help people to do house work.
Robot vacuum cleaner is a kind of good stuff to do housework.Why not try?