I have zero interest in killing people for the sake of sport.
Neither do most people who do evil abominable things. When Joel Webbon says "Christians must recover the lost virtue of Hatred" (yes, he said that) do you imagine he says that thinking "Yes, I am an evil person, advocating for evil, and gosh darn I love being evil". Because I can probably guarantee, with a pretty good degree of certainty, that in his own mind he thinks what he is advocating is good, righteous, and right.
Do we imagine the people who have gone into public places and committed mass killings always think, "I am bad, and I like being bad"--I just don't think that's what usually happens. Are there people who may think that way? Sure, mental illness comes in a lot of forms. But I just don't think most people who do truly awful things think of themselves as "bad people", and that what they are doing is "just for fun". They do these things because they believe themselves to be doing the right thing.
Do we imagine that the ancient Romans, when they arrested and put Christians to death, did so because they saw themselves as evil and just enjoyed being evil and killing people for fun? Because we have the records, the reports, the words of those who condemned and killed Christians--and pretty consistently they believed that their actions were just, right, good--they were defending the Roman way of life, they were protecting Roman civilization. They believed that Christians were an existential threat, and that the gods would show their disfavor to Rome if Christians weren't dealt with; the charges made against Christians were that Christians were "atheists", that Christians were "haters of mankind". They put Christians to death because they believed Christians were undermining the values and virtues of Rome, they were a genuine threat against Caesar's legitimate lordship, they had to either recant or die, because to let them keep being would mean, at best, a loss of Roman family and social values that kept everything held together; at worst the ire of the gods would result in a loss of the gods blessing and favor--that could spell disaster, calamity, an end of the world as they knew it.
A lot of that should sound very familiar.
People don't wake up one day sporting a pair of horns and a forked tail. They are going about their lives, raising children, going to work, shopping in the market--and they also happen to think that Jews/Muslims/Christians/Black people/homosexuals/Asians/immigrants/fill-in-the-blank-here are dangerous, evil, going to destroy civilization, and so must be dealt with, harshly, in order to preserve civilization.
Because here is the entire Webbon quote I referenced earlier:
"Christians must recover the lost virtue of hatred. If not Christianity will survive, but the West will be finished."
-CryptoLutheran