The Stats prove you wrong, 36% of Asian women marry outside, 12% of Asian Men (because Asian Women are seen to be as more desireable) 24% of Black men marry outside 9% of Black Women (Again because of desireability). latino intermarriage is also on the rise as well
Intermarriage rates will continue to rise as taboos with interacial marrage fall. There is still some stigma for a white person to marry a black person which is part of the reason its not higher, but it will change as there are famous celebrities invovled in interacial marriages