I’m not into feet myself, but I sort of get it. Most bodyparts that are fetishized have ways of signaling physical, mental, and sexual health. Collectively, that’s physical attraction in a nutshell. Secondary sexual characteristics are the obvious ones, but consider where a person’s mind is if they have good hair and teeth? What is suggested by nice looking skin, or have laugh lines instead of a furrowed brow? Feet - well, you have to be in pretty good health and on top of self-care to have nice looking feet. Surely, that’s gotta be meaningful to someone.