In my opinion, Bitcoin in the future will become a significant currency for us, and not just a means of investment.

My take on this is, I don't believe that Bitcoin failed on being a currency because there are still some people using it as currency regardless of its volatility. It may not be as successful as it is being utilized as an asset but that doesn't mean it failed on that area. I, myself, don't use it as a currency but there are still others who do, more and more establishments are accepting Bitcoin as payment already, i think that will continue still, at least from where I came from.

Bitcoin is a digital currency where many people especially those rich in Bitcoin people use it to buy expensive cars, properties and even as a gift for a wedding. Despite it's being decentralized, the volume of Bitcoin users increases in number. The popularity of its currency has reached the thoughts of many and it's starting to get more investors among businesses and other industries. So I can say that Bitcoin is now a currency, just decentralized, and so far, unregulated.

As we know that Bitcoin is best investment this technological inventions Bitcoin will be driven into the mainstream by economies that are thriving. And for me its not been truly proven that Bitcoin failed as a currency.

It is unlikely that bitcoin will collapse in the foreseeable future. The upcoming hardcore can well pat his nerves, but absolutely surely does not put a cross on the first and most popular currency. The most negative scenario is after the appearance of B2X, when there may be a rollback of bitcoins, but most likely, after a few weeks, bitcoin will go to storm new highs

I disagree with this,bitcoin can never fail

I partially agree with him and also with you. Bitcoin might not have failed as an idea or whatever it is, but it might be failing as a currency if in the next 2-3 years, this volatility is not stopping. it can't be that a 2k usd transfer is suddenly only 1900 usd worth. ya, this from sending a TX until receiving a TX.

I am positive, but as of now, its failing AS A CURRENCY.

Bitcoin still will not considered as failed considering the fact that it is also at the early stage of conquering the world. Even though its main purpose now is to be an investment and not a currency, it is still helpful to the people and that is a good point. Some countries promote bitcoin now, and its a good start. Wait for it.

Bitcoin isn't valid as a currency. It is not bound to be one. There are various reason why I says so.
1. Its unstability wont make it last.
2. Everytime the network is saturated, it gets slower.
3. Sooner or later, with the technology rapidly rising, people might be able to develop a hack