Bitcoin is promising in all aspects, but governments around the world are against it. Because they are realizing that if Bitcoin is approved, it could bring major disruption to the existing financial sector. Governments refuse to allow the use of Bitcoin for a number of reasons. One of the main reason Bitcoin is unregulated and the government is completely unable to regulate it. Moreover, the governments have not yet discovered any form of how to receive taxes. For all these reasons, nothing can be said in detail yet. But the widespread use of cryptocurrencies will certainly put pressure on governments to figure out those aspects.