Bitcoin is a new thing, which involves less scope in daily applications, and it is difficult for many people to be interested in what has just appeared. Bitcoin is running in a network system, and it can be anonymously traded and held. People who cannot see a real object like gold will feel that Bitcoin is insecure and unreliable. There are also some regions or countries that do not support Bitcoin. If they suppress Bitcoin, people will think that what the government does not support is legal.