Adapting bitkoyin means introducing legislative rules for its circulation in the country and simultaneous taxation of income from this type of activity.
    Now let's see whether the digital currency that is not managed by the state is a blessing for the state, it is difficult to regulate and at the same time it costs thousands of times more than the own currency of this state. In this case, such a currency (and in fact it is the same money of the state, only converted to digital),
 can go beyond the state without control. Moreover, state bodies plan the financial life of the country, and here in one morning the value of such a currency can double, after a while become ten times more expensive, and then fall in half. How the state can plan pricing and generally financial issues in the country. if in its territory such a digital currency will go?

There are 2 reasons that come to mind.

1) Bitcoin is not traceable. With that, people could be using it as currency for doing whatever the government deems to be illegal. Using bitcoin makes it hard for the government to get a lead on who is involved in illegal activity. Again, while this may seem like a benefit, it can be used by terrorists, hitmen, etc.

2) It's hard to tax. Governments want to get the most out of the citizens as possible for federal funds. Using bitcoin could mean that it's harder to collect that money.

Because bitcoin does not bring benefits to the government. And bitcoin and other encrypted currencies can't be regulated. The government has no control over it. In addition, the impact of bitcoin on the banking industry is huge, and it has not yet been shown.

well because they cannot control it that's the reason they should be afraid of it government want everything in they to control which I don't think is correct it will create a lot of problems in the past we have seen some countries print extra paper money so this is the reason the government should be afraid.

1) Firstly, because it's hard to tax and bitcoin does not bring benefits to the government 

2) Secondly, bitcoin is not traceable,   it is difficult to regulate, can go beyond the state without control.
I think the goverment should find a way to adapt it and shouldn't afraid of bitcoin

There are many reasons why states fear bitcoin.
    First, cash flows in bitcoin can not be controlled. That is, bitcoin does not recognize territorial borders and the funds can leave the state uncontrollably, which will very badly affect the country's economy.
    Secondly, the anonymity of bitcoin creates obstacles to taxation of this type of activity and creates extensive opportunities for its use for illegal purposes.
     Third, volatility and large volatility of bitcoin also have a negative impact on the economies of countries.
     Fourthly, the high cost of bitcoin in comparison with national currencies is also a threat to the stability of the existence of the national currency.
      Fifth, the last increase in the price of bitcoin to $ 20,000 clearly showed that bitcoin is growing only due to the speculative speculative demand for it, that is, it is inflated as a financial bubble, which means that if it bursts, it will also negatively affect the country's economy.

Bitcoin is a digital decentralized cryptocurrency which is not controlled by any central body the government has no power in controlling bitcoin like other currencies.Bitcoin transaction is done without much time and fees over the world and the transaction is done peer-to-peer and no middle man has a role in bitcoin transaction.So these may be the reason for the government to be afraid of bitcoin.There is no way for the government to check how many bitcoins are in the hands of the laymen so they cannot impose any taxes over bitcoin holders.

They are afraid of it because it can replace the banks that we are using meaning it can affect the economy. Why? Because they're not the ones who are handling or controlling the bitcoin but rather anonymous persons and it has no tax.

Just another newbie posting in here with zero activity.... mhhh this is clearly a new both trying to get some activity points in here!

And this question has already been answered twice in here, i do not understand why you all are still trying to ask the same questions once and once again, it is bullshit.

Everybody knows that they are afraid of it (or maybe not) because it is exactly the opposite as what they are.

In my opinion, governments are afraid of bitcoin and the other alt coins because they have no way of controlling it. It is decentralized which means the people actually have the power and no government have dominion over them. I think bitcoin and altcoins are hard to regulate, this is another factor why governments are afraid.

Another one factor that is hovering around my mind is that the legislators themselves are afraid of losing their money. Adapting these alt coins means that fiat will be of lesser value and when you have too many fiat tendency is you will be afraid that you money will lose value and they are uncertain when to convert those to digital currency.

I have read an article before that only 10% of all the money in the world are printed and the rest are stored in accounts.