Internet network that has not got to the area of one of the causes, I dont really see a disadvantages but i think its because of the bitcoin is popular in many people but not too popular all the people there do not know about it And this technology is still not proven in many countries
As theres a lot of news that we can see and hear about bitcoin especially in Television, Radio, Newspaper, Social Media and also the talking of people about bitcoin, almost everyone knows about bitcoin.
But even so, those people who got accustomed to the classic or traditional ways or for those who live in the remote area that they much prefer to use flat currency rather than bitcoin, we cant force them.
I think its the countries problem if they cant provide a better technology or network which would have help those people to use and access it bitcoins.