-I think It is popular. many people accept and trade in Bitcoin because It is recognized and accepted as a currency by many.
-Bitcoin is decentralized and limited. This is a major factor for many Bitcoin users. Bitcoin is hard for governments to trace and tax
-Bitcoin acts like an equity investment. The market value of Bitcoins has had wild swings in value and even a market cap.
-Bitcoin is a social network. The Bitcoin "community" is active and acts like other online social networks.
-There are only 21 million bits so it has the same value as gold.
Bitcoin is recognized and used as the currency in the community and it can make bitcoins have value, the more demand for bitcoin will make bitcoin increasing in value.
more precisely, the role of the market greatly affects the selling and development of bitcoin. If the market continues to demand for bitcoin demand, auto purchasing power increases. and in due time, bitcoin will become an influential buying and selling tool in the world.