I think Bitcoin is not ready yet to be considered a popular payment method. In its current state Bitcoin is more suitable as an investment vehicle rather than a replacement for fiat money. My opinion about the 3 functions when related to Bitcoin:
medium of exchange - very limited as only few retailers online or offline accept Bitcoin as payment
store of value - the price of Bitcoin fluctuates wildly and it would be hard to use it for small daily purchases like bubblegum, coffee, cigarettes etc.
unit of account - because the supply of Bitcoin is limited to 21 million coins there might be shortages of available coins in the future if more people would like to deal in Bitcoin. I think Bitcoin might need to be denominated in new subunits smaller than a satoshi in order to accommodate the increase in demand and/or price.

As store of value, bitcoin proven as good investment and give big return last year. As medium of exchange, bitcoin dont have regulation in many country and ban if used as payment. But in many country, bitcoin regulated and can be used as payment.
As Units of account, i think 1 btc equal with 100mil satoshi. So bitcoin has all those elements

I think the biggest thing that will be needed for Bitcoin to become a popular payment method is worldwide adoption. Without adoption Bitcoin will never become popular. And once it starts getting adopted people are automatically going to start using it as a payment method which will in short make it popular.

bitcoin is already on a good position as a investment place but yes I agree that it does able to gain the trust as payment sector it is because it is online currency and it price is not stable as cash that is why many people don't trust this system for paying their bills so for gaining trust of the users the main method should be acknowledged the commoners about it protocol and working policy.

it is not all about what do you need to make it possible, we just need to make people realize the huge opportunity to be part of the future they are lossing at the moment, that is all what they need to understand so far. This is the only way

People find more stable value of something they to used for payment and have to government accepted it in the market aside from fiat. Bitcoin volatility stops it to be used and become an asset instead which seems to be much profitable rather than to used it immediately which needs high volume to meet the amount to pay.

That's an interesting post. Although Bitcoin has some existing technical problems, Bitcoin has been the most reliable and trusted cryptocurrency till now. And its community is still growing.

If bitcoin will become more stable in coming months/ years it will make itself more and more usefull and more and more people will make it easier to use it for payments or transfers for something, for me this is a matter of time only.

Because in the presence of bitcoin all this can be easily transact named currency in gital for this which has been permitted through the wallet .