Worn Keds have a special place with me.
My fetish (aside from seeing them on a woman's feet) was to masuturbate on the soles. The old style Keds that were popular in the 60's and 80's had crepe rubber soles, and the "sharpness" of the texture made masturbation with a new pair impossible (or at least painful). The sole had to be worn down a little.
Luckily, I lived in New York City, and the concrete soon saw to this for the Keds I had availble to me (mostly my sister's, and an occasional cousin).
Newer styles of Keds seem to have my fetish in mind. The soles are textured so they can be used "out of the box" without problem.