Yeah, True indeed. Bitcoin and other altcoins is very useful to countries with troubled economy most especially on 3rd world countries where means and outlet of money is rare.
In reality its hard to say that bitcoin is very useful in our economy, yes its true bitcoin can help individually because we can sustained our daily financial needs. But, in our economy it depends on the leaders of one country and no one knows how bitcoin will last. We can save our own troubled economy, it can start from ourselves and if the citizens and all leaders are being united.