Because some countries think BTC is the place of bad guys, they may use the BTC to fund the terrorists, and they may think that the BTC helps the money launderers.

it is true that the government is very afraid of bitcoin, especially on terrorist financing as well as money laundering, as well as disrupting the financial system within the country.

If they think that Bitcoin is used by people to transact money from terrorists and launder money, then why do a lot of other countries still accept Bitcoin? Some even legalize the use of it in their country.

I think that is not the only reason why leaders of countries do not want Bitcoin circulating in their country especially those countries that has a censorship in their internet. Usually the government do not want their people to use such cryptos since they want to monitor their people.

Could do,all today though I have been trying to show some wayward minds,that government is bigger than BTC and the crypto community. When someone can clearly see they have the resources and the power, and that all else that would be needed is the will. Then you have to admit so,banning or outlawing which ever name you choose is no doubt possible and do able. I don’t believe this will happen I believe a lighter approach with regulation, but they can do what they like. I am shocked to see today that people who own crypto don’t think their own governments have this power.

That's one of the possible reasons why some of countries are strictly prohibited to used bitcoin or crypto currency.
And also the government cannot control it because bitcoin is a decentralized currency.

I do not think the government wants to kill Bitcoin. They banned Bitcoin for a long time to learn about Bitcoin before accepting it. They do not want their people at risk. I think the government has made a very wise decision

I think government want to kill bitcoin because they can't earn money from it. Bitcoin itself did not pay a tax to the government, they did not trace every people have a bitcoin.

lack of central authority is the primary reason governments are afraid of the cryptocurrency. Nobody needs Western Union or its competitors if everybody is using bitcoin.

I do not disagree with your opinion but that not all countries are banning bitcoin but there are still many countries that also accept bitcoin because bitcoin is very easy to make transactions to all countries and transaction costs are also very low but I hope if later bitcoin can be known all over country to make bitcoin more victorious and in everyone's interest.