People have different traditions in different parts of the world for when to wear footwear. For example, in many countries, usually do not wear their shoes or boots in a home. In the United States people often wear shoes inside a home. In Japan, people do not wear shoes in homes, and floors are often made of very soft materials, too soft for shoes. In cultures where people always wear shoes, people sometimes think it is bad not to wear them. Not wearing shoes can be good for the feet, especially for children's feet.