mixed marriege

is there really anything "wrong" with mixed relationship/marriage between asian female and a non asian male?

i ask because there seems to be a unwritten rule or fixed boundary or restriction when it comes to relationships between asian and non asians.

if it is wrong and grossly unfair to restrict a person(s) from moving freely in life because they are asian or black, then how can it be right to discourage relationships between asian and non asian?

is there a fear of some kind that it is born out of?
please enlighten me.
imagine too if you were asian and you were told that because you are asian you cannot eat food or drink water, how would you react to such a unjust restriction?
well, just as we have a built in need for food and water regardless of our race, we likewise have a natural need to form relationships/friendships and even the desire to find a wife or husband, and to place restrictions on that because of difference of skin color really is unreasonable i think.
i would be interested in your views on this topic.