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.
To date, all three you mentioned already exist and is in use. The thing right now is choice. Even with the facilities available, many users still decide to convert their bitcoin to fiat currency, probably because of how used we are to cash.
Personally, i use my bitcoin even for the smallest payment of topping up my mobile phone load. Sometimes i also pay my bills with it. Yet, still i'm guilty at times of converting my bitcoin to fiat currency as there are some payments i wanted to make in cash.
As to your concern and desire to see bitcoin become a popular method of payment, don't worry, it's on its way already.