Especially useful in places like Venezuela! (Coming soon to a country near you!)
yes it is useful, and you do not need to exchange it to somewhere, we can use cash everywhere because it is what they are accepting. you do not need to go and find somewhere for the exchanger for you to use.it is also what is in use in every country, but then there are also disadvantage of having a cash and there are advantage of not cash, like bitcoin.
Well that is the advantage of cash over Bitcoin, its availability, volatility, and utilization of cash. It is available everywhere, specific cash for specific area; its price will not make any discrepancies in just a matter of hour unlike Bitcoin, it has its stable price; and its utilization is quite very obvious.
Then in Bitcoin, I've mention that volatility is also an advantage of it, since just a year ago its like $2k dollars or so but now its $5k, you see that's a lot.