I don't think anybody wants to pay capital gains taxes when purchasing things with cryptocurrencies. Fortunately there are countries with a sane tax policy regarding cryptocurrencies where you don't pay taxes on cryptocurrencies, such as Portugal [0]. Maybe Americans should be pressuring their government for changes to the laws so cryptocurrencies can be useful for payments like they were originally intended?

[0] https://www.forbes.com/sites/kellyphillipserb/2019/09/19/por...