F. Two interesting things. The S of men in the market for male mates is the same as the D for women in the market for female mates. Demand for women is higher under polygamy. For other attributes, people disagree. For example, Jews prefer to marry other Jews, but Gentiles prefer Gentiles.
Backpackers like to marry each other.
There is far less competition on this margin, because each niche has a mix of advantages and disadvantages. Personality correlations are weak. There is very little evidence of any negative correlations - opposites do not, on average, attract. B. Household production is cleaning, cooking, shopping, caring for children, and all of the other chores people do when they aren't working for others. If the lower-wage labor is actually better at household production.