In terms of traditional roles, this is one of the reasons men (generally) have done well in their respective careers while also having a spouse and kids. There is someone at home doing the heavy domestic lifting, allowing him to focus on his work tasks. Again, this is just a noteworthy generalization, not a sexist attack. The work the at-home partner does (regardless of gender) is extremely important. And a lot of people either take it for granted or don’t realize how much it provided them the privilege to succeed.