Although there are a number of obstacles to overcome, cryptocurrencies have the potential to coexist successfully with the US dollar as a form of payment.
The biggest difficulty is volatility. Because of their price swings, cryptocurrencies are not suitable as a reliable store of value. The widespread use of cryptocurrencies as a medium of exchange or a unit of currency may be significantly hampered by this volatility.
The issue of little acceptance is another obstacle. Cryptocurrencies are still not accepted by the majority of businesses, despite the fact that some retailers and establishments are starting to accept them as a form of payment.
Also, there are regulatory issues with cryptocurrency.