And how do people calculate this 75% vs 50%, why not 69%? Women are "weaker" by nature and they will naturally be earning less and contributing less. I know there are exceptions where woman earn more or countries which discriminate female workers less than another. From my point of view wives should not be forced to work to make a living, unless they want to. If they want to stay and take care of home, shopping, cooking, kids etc. then how to value such contribution? Is it 13% or maybe 38%? Or is it priceless because both are working to make the (business) family running?