In my personal case I can't see any disadvantage or downside of Bitcoin especially in this digital age such a digital currency is playing a very important role in the economic development and improvement of the current civilization. However, although Bitcoin is currently used in various criminal activities, in that case, Bitcoin is not running in any bad direction by itself, but it only has bad effects automatically when the users run in the bad side. Bitcoin plays a very important role in controlling inflation and is used as an important medium of exchange in today's civilization.  Various countries are very active in legalizing Bitcoin and already some countries in the world especially El Salvador have already legalized Bitcoin.