I only travel outside the country maybe 3 to 4 times a year but whenever I do I wish there is just one currency that I could use whether it is "real" money or virtual money. I just think it would be more efficient if there is one common currency since the world is getting smaller anyway and traveling the world has been in vogue for quite some time now. I can use my credit card, yes, but it often makes me wonder how much money would I be charged at the end of the billing period if say the currency exchange changes a lot from the time I swiped my credit card. And well, I just don't want the bank charges. Is there a possibility for a crypto to be able to provide this service?
The beautiful part of the cryptocurrency is that every business can create their own microeconomy with their token/coin. You are not dependent on single currency and its set of rules. In the long run this still creates a centralized power no matter what. If you have multiple currencies and can exchange them easily via any exchange than that would be perfect. You don't like how company X is dictating the pace and rules? Use Company Y and their currency if it suits you better.
It might seem that 1 currency would solve problems, but that would just create a dictatorship like you have it now with central banks controlling almost everything by just printing more money.
The way I see it, if there are thousands of currencies out there, you can choose whichever is best for you. If you don't like it, just exchange it for another currency fast and easy on any exchange online.
That is how the future should look like.
Each company has its own microeconomy and not the governments.