It is possible to be racist against a group but still be sexually attracted to them, because of how strong the sex drive is (especially in men). I mean, in a man’s mind, if you have the right womanly parts, and you meet his image of what he considers attractive, then he’s going to be turned on bottom line. Racial stereotypes can make this type of sexual attraction and curiosity worse. Asian women for instance are perceived as being docile, exotic, and submissive. This is why white men lust after them, and they are so common in porn. The Asian women (as any woman) take advantage of this lust for money and fame. And since Asian culture appears to be more obsessed with being accepted by whites than other groups, this may further encourage them to denigrate themselves and their race. And lastly to address why Asian men are not with their own women in the porn. The reason is simple — Asian men are not viewed as being sexual in this society. And porn (like any other form of media) is regulated by stereotypes. If the porn creators think that white and black men fit the bill for what is considered sexy and masculine, then that’s what they’re going to have.