A crypto currency like Bitcoin gives you the ability to make transactions without the need of a central bank.
Bitcoin is the gold for the crypto currency, it is the longest and has the largest capitalization of the market. Although bitkoin is in many respects superior to traditional ways of paying and transferring money, there are, however, certain obstacles to its widespread acceptance.
Yes bitcoin do gives the ability to make transactions without the central bank but at the same time bank transactions are extremely fast compared to bitcoin transactions . This is where bitcoin lacks and also there are miner fees in the bitcoin transactions where as bank transactions are almost free. These may be the reasons that bitcoin faces obstacles to its widespread acceptance.