Re: What do you think are the biggest disadvantages of Bitcoin?
Bitcoin is not completely implemented in every country and due to very low transaction fee many people are using for illegal activities, The price of bitcoin is also not stable. 
Yeaah this is one disadvantage of bitcoin that it is not completely being used by different countries. But I think it's not the biggest disadvantage of bitcoin as once the system was being fixed and everything works perfect that is going to be accepted by countries and they will voluntarily adopt bitcoin whenever they want.