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by AnthonBerg 4 days ago
"In animals with hierarchical societies, aggressive behavior is thought to help individuals gain and maintain higher social status. It has been shown that aggressive behavior, especially the experience of winning, has rewarding properties in animals and repeated aggressive experience may lead to compulsive, pathological aggression that is highly reinforcing."

From the 2017, uh, molecular neuroimmunosociobiology survey paper Aggression, Social Stress, and the Immune System in Humans and Animal Models by Takahashi, Flanigan, McEwen & Russo – https://doi.org/10.3389/fnbeh.2018.00056

(These are serious, credentialed people. The tl;dr is that "losing" is proinflammatory and subjugating others is antiinflammatory. In the brain. Which is behavior-modifying.)