Remember: you think it's common only because you're totally obsessed with it, that's all. So since you are obsessed with this, your brain only sees that and does not look at other couples. When you see a black man/white woman couple, there are 15 white man/white woman couples nearby, but you ignore them. Me i don't ignore them because i'm not a obsessed cuck like you, when i see two black man/white woman couples, i see 20 white man/white woman couples nearby right after, on internet or IRL, because 90-95% of white women go with white men.
You are in denial, you don't look at reality as a whole, you only look at the small minority that matches your fetishism, it's pathetic. The truth is you are just white cucks and black losers obsessed by interracial sex, that's all. Why is there no "couples of white men with white women" thread??? 1: because there would be millions and millions of photos to put, it would be infinite because these couples are 100 000 times more than black/white couples. 2: because nobody cares, because everybody knows that 95% of white women are in couples with white men. 3: because it's not a taboo like interracial couples, there is no one who fantasizes about white male/white female couples so nobody cares, but there many whites cucks and black men who fantasizing about black male/white female couples, that's the huge difference.