Pollution of your bloodline is the only relevant issue.

Note that many ethnic groups try and protect their bloodlines. Indians with their arranged marriages and so forth. Look at the efforts by Israel to prevent their offspring from mating outside of the tribe. LOTS of stress on that one as the kids have fallen from the "faith".

The tools to dilute opposing bloodlines has been VERY effective. Look at white women who are now breeding with negroids...THAT would have been unheard of even a generation ago...but now it is paraded as being progressive!

However one feels about any particular race, all that is necessary to do is look at the prevalent characteristics and decide if future generations would benefit or be detrimental to their future growth. Negroid race has a lower IQ...that is a FACT beyond debate, and is documented but not publicized for obvious reasons.