We have evolved in every other area except the double duty, double standard of householder responsibilities.
In an article in the Associated Press, David Crary states that men and women are unequal in household chores but he thinks it's getting better.
Don't tell Jane it's getting better because she would be outraged. She'd cry out, "It's not happening in my house!"
Another part of the article stated that men's housework duties have doubled in the last forty years.
Forty years ago society expected men to do (0) so that may be true.