As for me Bitcoins high volatility is the main problem for todays crypto and its image in the World, that's what prevents fiat replacing for the current moment.
In many respects, due to the high volatility of Bitcoin, the state is delayed with its legalization, as well as with the legalization and the rest of the cryptocurrencies. After seeing how the price of Bitcoin increased to 20 000
dollars, and then dropped to $ 6,000, many states began to treat Bitcoin as a financial bubble. In general, this greatly hinders cryptocurrency from being introduced into our life. Although for traders a large volatility of cryptocurrency is very profitable in trading.