Unified Race, Utopia or Not?

An interesting debate in my opinion has been sparked though another thread.

What do you feel outweighs itself, Having differences is definately important for adding culture to our society; as compared to being a unified race, as K_A says possibly making it impossible for us to be different, or fast forwards a few hundred thousand years where we're all the same race, do you see it as a good thing? Or is Diversity a good thing.


And if you DO feel that a 'Utopian' race is a good thing, what other problems would be created, or solved.