Bitcoin has many advantage than gold or or fiat. if before people exchange what they have for gold and other valuable material to gain more when they invest. In bitcoin is also some sort of investment which in later years you will gain. its decentralized and you can keep your money with sure profit
What makes bitcoin superior to bitcoin or fiat is that its price is increasing year by year,
we can see for ourselves and of course the price can still go up again,
Despite these advantages, there are still drawbacks and investing in cryptocurrencies is a big risk, so it's not easy