I would think the majority of men would have at least a sneaking desire to try on a pair of heels. A guy would have to be almost devoid of imagination not to be at least a teensy bit curious. And a desire to step away from the pigeonhole for a bit, take a holiday from all the puritanism on the men's side of the shop. Probably fewer actually want to wear heels as a regular thing, but I'll bet the vast majority would love the opportunity to try - to spend a day or a week in heels.
Novelty has its charm and no doubt that adds to the excitement of wearing heels at first. Novelty naturally wears off with experience, but I think the pleasure of dong and wearing what you like endures, especially when you know you're breaking the rules, and will always endure.
I almost forget that I own Hunter boots - I tend to think of them as workwear, and in a different category to my other fashionable knee boots, with or without heels.
Although some of my knee and OTK boots do not have heels, I include them anyway as the styling is feminine, and worn over skinny jeans are more obvious than many heels worn with bootcut jeans.