9. Replacing Worn Running Shoes
The sports shoe industry is designed like the cell phone trade; the product becomes unattractive, unhealthy and useless to us over time, so we do the all-American thing and replace it. I moan each time my tread gets worn down while the canvas and leather and rubber or whatever else makes a running shoe seems to be in great shape. Until we can just replace the treads, we keep getting new ones.