To understand why race mixing feels bad to members who know they have the highest genetic fitness, you need to intimately understand genetic algorithm to the point where you can write one in software, for example:
https://youtu.be/VnwjxityDLQ?t=8When your proverbial formula 1 racer is 1 lap from the finish line, you don't pitstop to renew the tires even if you're running on the rims. But on the other hand, if your formula 1 racer is in last place and you've got 18 thousand years of evolution to cover, you need a fucking moonshot. You not only pitstop to renew the tires, but you also pitstop to evolve the tires and evolve the engine and swap the engine with a jet engine and bofors cannon to eliminate the competition.
Am I starting to sound like the operating principles of Jihad, both Arab and Jewish? You should read Surah in the Quaran, all this is there.