Why do "some" white women think "ALL" black men want or desire white women?

I have seen some pretty crazy and funny questions on here recently. One in particular was, If I got 10 cents everytime a black man left a black woman for a white woman, how rich would I be? Anyone who has taken a sociology course knows the majority of all people date/marry someone the same race, religion and social cl as they are. Yes there are some black men white women relationships, but not as many as people are making it out to be. We all see Tyrone the low life with his FUD(fat, ugly and/or dumb white girl), who is a minority relationship. Usually he is the guy no black woman wants and she is the woman not desired by a white man. The suave, y black man with the attractive white woman are out there, but are a minority too. The largest interracial couple are white men/asian women. If this woman was to ask how rich she would be if she recieved 10 cents or even 5 cents for everytime a white man opted for an asian woman instead of a white woman, Im sure she'd be wealthier than her original question. Anyone else understands this logic she has? Seems to me this woman is trying to convince herself she is right. What do you think?