So this about my gender politics: Unlike the case with, say, race, I don't think that an optimal outcome consists of gender distinctions being obliterated. If the day comes when no one notices or cares whether someone is black or white, any more than they notice eye color, I would only applaud. But obliterating the difference between male and female does not seem to me desirable, and I am glad that it is impossible using present-day technology; the fact that humanity has (at least) two sexes is part of what keeps life interesting.

Why the difference? Doesn't the existence of different races keep life interesting?