Scam is too much of an accuse against paper money even if we know that their future can be limited. Don't forget however that still in our day fiat is the major trading globally as to many economies are floating around paper money. The other part is that Bitcoin is coming hard and is trying hardly to get a reputation of a global use currency with mass adoption.
We still use fiat and paper money because the government gives value to that paper. What exactly makes the paper worth?
whereas many other goods have value and are worthed to be used and have a stable value such as gold?
Paper money is what it is today because it is being recognized as a legal tender, but I really dont see worth of it, how the value even came by is a misery, some people just woke up and decide to say this is the worth of the paper, meanwhile bitcoin started form zero and as people adoption it, the value keeps appreciating.
Although paper money is not worth it, but it is still a necessary evil, and despite all satoshis effort to put a stop to it, it still found its way crawled into the industry because many people still tie a particular cryptocurrency to dollar equivalent. So, I would say that paper money is indeed a necessary evil and I am still trying to think of how we can be free of this paper money bondage, if the string old behind money can be cut off, then it should pave way for cryptocurrency.