I can agree, Culture has a bigger beaing on this issue than race. I speak not as one standing on the sidelines, but one who is in the middle of the game.
I have two black grand-sons, and a grand-daughter, each I love as I loved my own children. But as Pastor Bob said above, they have a hard time relating to their own race, as most of their own race, has a problem relating to them. Their dad seems to be very put out with them, and sometimes to the point of physical abuse because of this.
As a result of this, they are very mixed up little folks, who don't seem to know where they belong. The outcome of mixed marriages in not the marriage, but it by-products in children, who are not sure who they are.
I guess the only way to look at this situation, or to compare it would be. Like if my neighbor pulled his barbecue, over in my back yard to do his cooking. Now not that I would hate him for it, nor would I move because of it. But I would strongly feel, he should stay in his backyard to do his cooking. Especially since his own backyard is just as big as mine, and no less attractive.