I guess you could also explain it with your DNA. People from a different background have completely different genes. And when you have children with such people your children are more likely to have better genes because of the variety. So I think it is normal to be attracted to different people from different backgrounds.
Just like I'm not attracted to blonde haired guys, overly buff guys or very short hair on guys, some people just aren't attracted to their race or other races. It doesn't make them anything other than a normal person with preferences.
depends. it could be, or they just don't care. who says a person should have attraction to their own race? i find most people who despise interracial dating are not very bright, or have insecurities of their own.
Maybe you just like differences that you don't see in your own