The global economy is nearly 80 trillion USD per year. Payments using any type of cryptocurrency as a medium of payment is a tiny fraction of this total.
What are some of the reasons preventing cryptocurrency from being more successful as a medium of payment?
A lot of people can give their reasons on what they think makes cryptocurrency to lack mass adoption, but as for me the only reason I believe that is keeping people from adopting Bitcoin and other cryptocurrencies as a medium of payment is lack of stability. A lot of people get interested in using cryptocurrency but the thought of losing their money due to volatility will always make them shy away from it.