In general, people do not understand the basic concept of Bitcoin fully. It is difficult for people to understand the idea that virtual commodities can really be worth money in the real world. This is the same principle as the initial implementation of the Internet, everyone thought that this would never exist and not ever become big, but time changes rapidly.
Actually all the people are not same. All the people don't believe in bitcoin equally. We can understand the concept and movement of bitcoin, it is not so difficult. There are many people among us who are scaring about the price. They haven't much idea and knowledge about the bitcoin.