Sometimes, you have to navigate someone else's vision, to solidify your own.
Is your perfect world really that non-diverse?
Can you honestly say you don't benefit from any other race's contributions?
To turn down so many attempts to build bridges, there's no way you're honestly concerned about conflict.
The lack of exceptions suggests that an entire culture has no people you would find as attractive as the least attractive of you own over one cline.
You have to come to the conclusion that they sincerely like segregation, and it's ok.