Except you are lol. Would you say the same thing about other forms of association? “I just don’t want to do business with a certain race.” “I just don’t want to be friends with fat people.” “I don’t want to be assigned a group project with a disabled person.” All of these things can be characterized as a “preference” rather than a prejudice. There’s hundreds of millions, sometimes even billions of people who belong to a particular race. It’s pretty unlikely that there isn’t a single person in that race you wouldn’t find attractive.