Ok its not heels or feet that look sexy in high heels, what it does for you physicaly is atractive.
Now the high the heal the more your glutes (or how ever you spell it) and calf muscles strain making you look tighter also your hips/ ass will sway a little more and it makes you look taller thus the sex drive from heals. Though there are thoughs of us with shoe fedishes but I don't think that's what you meant.
look in the mirror on and off them and you tell me. Heels are designed to curve the body. Out with breast and ass, in with stomach. Its made to make you look better. Or that's how it was explained to me.
Heels dramatize the legs...Mainly calf muscles. They make your legs appear longer and really shaped. They also make your rump look better. When you wear them, you appear to have more of a figur, as well as a thinner stomach. It's a simple illusion.