That's because you live in a country with a functioning currency.
Most of these countries barely have a stable internet connection or even stable electrical power, so I wouldn't surprised if these 'currencies' aren't so helpful in practice.
* Note that use by corrupt politicians to launder their ill-gotten gains is not a positive.
Yes, bitcoin can play a role but it's not like you're paying for your groceries in bitcoin. Cash under the mattress > blockchain