For something that can become a popular means of payment, you need the following:
Store of value: allowing individuals to make intemporal choices on when to spend their purchasing power
Medium of exchange: facilitating the exchange of goods and services by eliminating the inefficiencies associated with a barter economy
Unit of account: acting as a measure of value in the economic system.
Do you think the bitcoin has all three of these elements? I am looking forward to the bitcoin will become a popular payment method in the future.
In my opinion, nowadays people usually use something that can help them and make them easy to do something. For example, when you wanna buy something from another country you don't need to change your money from Yen to Dollar in money exchanger before you buy your things. That makes bitcoin easy to use as a payment, and that is one of benefits using bitcoin.