EVIDENCE:
Interesting topic. Personally I'm not that attracted to white women. As I've said before, I prefer more exotic looking women from different cultures (mainly south American). Thast doesn't mean I don't think many white chicks are hot or something: there are a lot of good looking white chicks, but they don't grab my attention like other women.
This topic has been debated over at family dinners and events for years. Now that I'm at the point where I should be looking for women (lol, spare me the ribbing for a sec) according to my mom I am beginning to hear more things. I've shared conversations that I've had with my aunt and grandma on this subject many times so I won't do that again, but I will say this: it is indeed true that many black guys go for the homeliest, average, overweight white women they can find. NOT ALL BLACK GUYS DO THIS, I know. But I would challenge you to search for black guy/white girl couples and not see this pattern. Why is this?
As some have said, white chicks put up with a lot more shit than black chicks. This is a stereotype of course, but in my experience it's not far from the truth. Let's face it: black women are more...aggressive than white chicks.
EVIDENCE #2: (skip to the 5:07 mark for black woman on white woman violence, but the whole video is educational)
Is it because, as some people say, black chicks don't do whatever a guy wants sexually (IE oral, anal sex) and black guys feel a white chick will give them that, and a big white girl can give him big ass too. That's what I've heard.
BUT
There's also the idea of the slave mentality. The idea that we've been conditioned and told that fairer skin is superior to darker skin, and that straight hair is better. Many social studies have been done on this issue. Personally I don't agree that this is the main reason; people like what they like period. Is someone "racist" for thinking straight hair is superior when those with "nappy" hair fry it to make it straight lol. What I'm getting at is maybe it's not just the black man who thinks that white women are better. Maybe black women think the same, and that's why they're so combative about the issue