I still do believe in fiat thats being part of our daily life, daily needs. Its difficult to live without this as this is our form of currency to buy goods just to survive. Though bitcoin is currently being used as currency, I beleived it has a brighter future.
Off course yes, i am still believing in fiat because all people in this world needs fiat to survive in this world, and even a lot of cryptocurrency is becaming popular i dont think that fiat will be replace by digital currency now, and i am sure fiat will still exist in this world for more than 50 years.