I have blue eyes which allow me to see colors better. Brown is dominant. If I were to mate with a brown eye of any race, my eye color goes extinct. What kind of diversity is that?
I wasn't thinking anything about genetics. I just mean I've found poor, rich, smart, dumb, people who talk funny, people who talk like me, people with their pants around their waste, people with pants below their butts ... in every race. The title of this thread could easily be switched to "why haven't trailer trash white folks assimilated..." There's a whole town in Texas called Fruitevale full of inbred whites, who haven't assimilated into this century.
But I guess your main focus isn't on personality traits, it seems to be on the actual color of things. Are you also worried about your shoe size being replaced by a more dominant size? Really, focusing on color or even the differences between people in general, seems weird.
People who think a whole group is doing one thing all over the country or world, haven't met many people in other places. If you live in a place with mostly thugs, it's probably easy to be racist. But if you move somewhere else, the black (or insert your prejudice color) folks talk like everyone else, wear the same clothes, have the same education, often have more money, better vehicles and homes, etc.
And what does any of that matter, anyway? Why are racist people focusing on what everyone else is doing and not busy living their own lives and just being friendly with the people they run into throughout life?
Well it's time for me to stop worrying about what you're thinking and go live my own life. Have fun shutting out most of the world because they aren't like you, the person who is doing it all the way it should be done and even wearing the right skin color to do it. Your skin color isn't something you chose, so I don't know how you could possibly find any pride in it. It isn't something you achieved. And the black people who say black is the only real skin color, and all whites are albinos, are probably right. They're probably right about that just like scientists are right about evolution; people just don't like it. It isn't something to be "liked", it's just the way things are.