Whether or not the electronic money through the future is easy is a difficult question. Firstly, in terms of economic integration, this is very difficult now because each country has its own face value and money, it is difficult to synchronize, another difficulty is that the legal is unclear because each country has one private law. Secondly, the political, military, and information technology are uneven, leading to access to electronic money is not virtual reality. So how to solve this problem?
Simply, you don't. View bitcoin as an investment method that can yield you an opportunity to earn large amounts of profits in a relatively short amount of time compared to other methods present. What makes bitcoin interesting is the technology which it operates on- the blockchain technology. With this revolutionary transaction tool, various coins can utilize this and create a better version of bitcoin itself.
With those issues that you mentioned, I think eventually countries would be lenient about its implementation and acceptance. What makes it impossible is the economic barrier between developed and underdeveloped countries as different currencies have different value depending on their status.