Fiat will continue to pose good significance in our society until the new set of generation which are completely inclined with technology and the internet emerge. Remember, there are still some people who do not know much about the internet or do not have internet access in order to use crypto.
Till date fiat currency has its value and nobody can deny it. the value of fiat currency could not be eliminated so easily. It is right that if the new era of digital currency takes place in the market and is acceptable all over the world, fiat currency may lose its value but till that time fiat currency plays a vital role in the economy of a country and we will have to accept this fact.
You are right, fiat currencies really have a high value in the society and this is the main currency used to buy are personal needs most speciall basic needs in our everyday life.