It is possible that bitcoin replaces the cash currency but it will take a lot of time there are still many regions in world who don’t know about it more awareness is needed and this will happen in only one way that the prices remain still or they go up there is no recommendation for the dump to do so. As the people will aware about this they will accept this.

Yes,  bitcoin still can not replace usd because the price is not stable yet,  but it is normal because it is the properties of the new currency with relatively has low liquidity. But if bitcoin get mass adoption,  the price of bitcoin will more stable.  But we the current condition is not negative because trader can take a lot of profit because of the volatility of bitcoin.  Anyway the most of bitcoin users are trader. So we do not need to worry. Bitcoin is a currency.

yeah, that's a good point. it is really difficult to replace currency by Bitcoin because of its price instability. when you have to pay your bill with Bitcoin and after that, you will see that your bitcoin price increases then you must be repentant for you Bitcoin payment. it can be a different story as well. so this is really tough to match Bitcoin with a conventional currency...

The sad truth for governments is they may not have too much of a choice, as an example the Zimbabwean dollar went through hyperinflation and the only measure the central bank of that country could take was to accept foreign currencies as legal currency in their country, now Zimbabwe does not have his own currency and they say that it is only going to comeback when the fundamentals of the economy are fine, but this is the issue, do you think the people are going to trust in their government again, of course not, if they try to impose their new currency and forbid dollars and the rest of foreign currencies people are going to fight back and keep using those currencies instead, and that new attempt to reintroduce their own national currency is going to fail, and the same scenario is going to happen with bitcoin.

The fact that Bitcoin is unstable is just one of the reasons but also the number of Bitcoins is limitted, it's virtual and it's not centralized. These are the reasons that Bitcoin will not replace regular fiat currencies but I think Bitcoin wasn't even created with that purpose but to be the alternative to fiat currencies what already has become.

we do not need bitcoin to become a currency right now. Bitcoin becoming gold is enough for me. Since the price of bitcoin is very high, we can earn a lot of things from bitcoin so that being a currency will make bitcoin meaningless

It is true that the price of the bitcoin is not stable. It can go higher or even lower in just a few moments. Thats why it cannot use as the world currency because it will be hard for us to use it if its value is continuously changing. But what if someday, the price of bitcoin will be stable then it can use as a currency in some places or even all over the world.

The more money that flows into Bitcoin, the higher the market cap. The higher the market cap, the more stable the price will be. Simple economics for the win.

Let Bitcoin scale enough to handle 20 transactions per second mate, you can't replace any currency if you are not a currency, people often call something

Universal and accessible with abundant supply a currency, Bitcoin is neither and even now people running the show saying that, they don't want it to be

A currency in a traditional way. they want it to have these fluctuations because without them no money is earned.