I think it is not failed as a currency, becuase of the thing that you said that it is now usually used as an investment but for me, this kind of scenario is a stepping stone to bitcoin to become more popular and start to become a successful currency today.

Bitcoin is actually successful in being a currency because Bitcoin is used in some stores and companies. Bitcoin is the digital currency used for means of payment and can be used as an investment asset.

Not really that failed. Bitcoin has been accepted by some big companies as a payment.
but this is just only the beginning. Maybe other big companies will start to accepting bitcoin as a payment for their product too.
Either it is a payment or an asset to invest, bitcoin has bring many peoples wealth.

Some governments around the world have already banned initial coin offerings and are looking at strict regulation to bring cryptocurrencies under the control of the global financial system. So I think no

Yes indeed bitcoin is a digital currency but here is more likely in investing because bitcoin is so unstable or fluctuating that so many people use it to invest instead of being used in real terms because bitcoin is not a standard value.

If indeed Bitcoin is ready to be a currency, it needs to underline, that a safe currency is a currency not controlled by the whale, and also its total supply can be sufficient for the public
indeed when Bitcoin is really legend in the currency, then the price will jump sharply, and the whales will also easily double their money to pump and dump

no, bitcoin is not failed it is successfully performs its duty in every cases.

Bitcoin's brilliance considers the subject of something worth looking for in the price of a store, but it is a common issue, it is being bought for speculation, but not as a means of price or exchange, because the number of people satellites divides work by doing the number for some people Bitcoin purchases for some practical use. Fast sells fast For and for sale, when someone actually uses the coin using it and that means I believe that when bitcoin is more than a satellitic by using a crypto currency as a real currency, volatility will be reduced but the market value will be reduced But the market can slip upwards.If Bitcoin want to be a currency it should be stable like real money.

for me i think people are just using Bitcoin at its full potential, they're just using the best of both worlds. I think its good that people are using Bitcoin for various reasons, maybe its currency or as investment.It is unlikely that bitcoin will collapse in the foreseeable future. The red market is just for s while, bitcoin is the giant of all cryptoworld.payment and many consumers are happy paying for goods and services with bitcoin. In my opinion, bitcoin can be used for payment and can also serve as an investment.