But diversity is only valuable to the extent that it helps create a better society. Like, ideally noone would even have to work! And there are plenty of examples of segregated (i.e. non-diverse) situations that we support becaues we deem them socially beneficial (e.g. sex-specific gyms and toilets, tall people competing in basketball, smart people are scientists, ...) (to be precise, personally I don't support these, but our society seems to, which would imply that the people on average do).