The one thing that ties it all together
Shoes are quite a unique article of clothing. They can be a fashion statement, functional device and even a medical device. No other piece of clothing quite works the same exact way, except perhaps for compression garments. If you have a tight pair or ill fitting pair of shoes, it feels quite different than a tight fitting shirt, jacket or even pants. You can cause some serious harm to yourself over time with tight shoes. However it extends much farther from that.
A bad pair of shoes can be too loose. Where your foot moves around too much during the course of the day and the foot is banging around inside the shoe like a racket ball. This can cause repetitive stress on the foot as well. Then there’s the bottom of the shoe. People might not even feel the lack of cushioning or perhaps the wrong kind of cushioning for their foot shape or type. Depending on how your foot falls on the ground, the pressures of what part of the foot hits harder than the rest, your feet will require very different shoes than what you might choose yourself.
