Some people have not yet realized that the Fiat currency is worthless. It's only a piece of paper since it stopped being ballast. The impression is made by a central bank that wants to have control of our money.
More and more people are waking up to this reality and are slowly buying BTC and altcoins. This movement is no bigger because some people use the name of Bitcoin and other altcoins to create ponzi schemes and other forms of theft.