People do not believe in crypto currency. They say that crypto is not fixed. As fiat - gold. Where does the value of crypts come from? What do you tell people?
There are several cryptos used on different platforms built on blockchain. If i was asked by someone, i'd say that the demand for a token can be proped up by demand for a product, if this product is backed by a blockchain.
This works the same with fiat, value of any currency depends on the amount of goods you can buy using it.