Instead of buying sevices and goods using your cryptocurrency, you should just use it for investing even more and trading cryptocurrencies so it will be much into a higher profit
While cryptocurrencies are very lucrative for investing if you start buying and selling products using cryptocurrencies, the demand for them will also increase a lot with Fiat currencies. Crypto is a more profitable currency than other currencies. Not only for higher profits but also for debit and credit cards. Developed countries can easily buy and sell products.