Wearing some of my favorite used antique shoes:
It's actually a turn-on to me knowing a woman (or women) has/have worn them and sweated in them years ago. I especially love the wear on the soles, imagining the women walking on the street to have lunch or go to work or go shopping -- or get fucked.
New shoes are so sterile, poorly made (compared to shoes you can buy for the same price used), full of chemicals, and rarely come in my size.