My ex... seldom wore shoes. Shoes for specific sports - running, mountaineering - but sandals whilst driving (state law) yet off the moment that she exited the car. Her bare feet, her calling-card. Many a man felled. An extraordinary woman, a sinner who could not abide my greater sinning.

Yes, as a child, my generation of upper-middle-class Californians: no mother would put shoes on a 5-year-old!

Clothing, optional. Shoes, optional. Feet, keep clean and bare.