Well i'm going to catch a lot of crap for this and most people who don't know me well would probably assume I'm the biggest separatist out there since so many people seem to think having "white" in your name automatically makes me some sort of racist.
I've dated outside of my race before and i've dated people who weren't Jewish, I've dated a European woman in the past, I've dated a Mexican girl, and I've dated a Native American girl. I never questioned the race of anyone I dated or dated them purely because of their skin color, but because they were human. I'm not promoting that as I know it's important for Jews to stay with Jews. The issue here isn't specifically race, but as mentioned, culture. I have a problem with black ghetto culture in particular but that doesn't mean black culture is the only problem, there are also problems in the white community and the jewish community as well. My cousin won't even date jewish woman because the vast majority he has met are feminist leftist headcases and are utterly insane. I'm not going to lie and say I haven't felt the same. Unfortunately in my experience, many of the Jewish women I have met in the past were people I really didn't want to associate with because I was not attracted to them for a variety of reasons.
European whites do the same thing, as for the guys, I don't know why white guys would want black girls, I don't see it often but perhaps that's just what they are attracted to like how some people prefer chinese food over mexican food. I know why the women do it, they get obsessed with the ghetto culture and the rap music and think it's "cool", it's part of their personality being ghetto like how some people want to be goths and date other goths or become punk and date other punks.
interracial mixing on whole is something that's going to happen regardless what we try to do to stop it, this is certainly nothing new. There are few homogeneous nations left in the world, even the Asian populations are not as pure as one would think. Simply look at India, China, or Japan as an example. Many Japanese have Ainu mixture in them. Europe especially Easern Europe has a lot of mixture from Mongols, Gypsies, Jews, Northern Indians, Turkic peoples and more.
If people are out mixing with others, is anything we say going to change that? That's like trying to make a communist a capitalist. Has it happened? Sure, but the vast majority are going to stay with that mindset.