I think there is documented evidence that hot chili stimulates pleasure receptors in the brain. I think the same for wasabi and horseradish, both of which I love! Different sensations maybe but delicious!For me, it's never been about making one's self miserable.
Only a handful of times have I tested my capsaicin limitations.
All the rest, and I do mean ALL the rest of the times - I am fully & completely eating and enjoying the "warmth" along the way while eating food.