I find myself with more respect for you than any of these people who do to the women what you have mentioned. You have cleanly stated that you only seek short term relationships for physical and biological drives only. These men we are talking about on the other hand will purposefully go into women who are not the same as them and make kids. These kids will then grow up and spread positive propaganda about places that didn't necessarily treat them well and confuse local people.

These mixed race individuals are often not in the best state mentally throughout their lives. For example, I worked with a mixed race man at one of my recent jobs and he displayed his unstability. He would often accost me for ideas, and try to take them as if he thought of them himself. However, the one white dude whom we shared an office with would never recieve this kind of treatment from him. He asked me to keep the door closed once, rather adamantly due to his fear of the cold. Yet when the white dude left it open he couldn't even bring himself to speak up.

That you would expect civility and self restraint from folks who are not the same ethnic background as yours makes you a better person than almost anyone who writes on this forum.