We failed evolutionarily to adapt an immunity to capsaicin. But peppers are super good for us, they are packed with vitamins. So instead we evolved a dopamine response to it that makes them more tolerable and slightly pleasing. This is why when eating something spicy, the heat gets worse after you stop eating, because you stop getting the little dopamine hits that dull the pain. It’s also why people love spicy food, you actually get a little high, similar to a runners high.
It’s a reference to the masterpiece Disco Elysium.