There's a bit of writing in that direction if you're curious. I like Benjamin quite a but and have gotten a lot out of his thinking. Here's the wiki-level entry to it:
They like purity. Purity of the body (fitness and lifestyle) and purity of society (regimentation, conformity, single race, single ideology, single sexuality, standardized architecture).
It's neurological. They feel emotional disgust if the regimentation isn't there.