The Japanese have the most stringent work ethic on the planet. What happens when the job is done? Answer: you drive your wife crazy.
In the older (nearing retirement) generation in Japan, the attitude that women should be subservient to men is institutional. With 20% of the population 65+, and the longest life expectancy on earth... that adds up to a lot of miserable women.
Maybe they should all start playing MMOGs. It would be bliss for their wives, except for having to clean around them.