Pretty sure someone has corrected you on this point already, there is no single central world bank that regulates currency, as such all major governments would have to be on board to destroy the use of cryptos, in any case your proposition is baseless, there is no way for you to know governments are going to ban bitcoins.
I explained it in the OP! Governments protect their monopoly.
Somebody just clarified Chinas position regarding bitcoin:
"but essentially if bitcoin is not a currency in China and china as a state only recognizes one single currency which is the RMB. therefore all merchants, stores and services can only accept the RMB. since bitcoin is not a currency and not a recognized currency so it's actually a logical conclusion that china for now will not allow goods and services to be sold and paid for by bitcoin" Bobby Lee (CEO of BTC China)"
http://youtu.be/rBgQFzyg8pk?t=21m57sAudience: Goods/services can not be sold in bitcoin. Im wondering if most investors in china are they expecting that to change?
Bobby Lee: So thats not going to change anytime soon. The government has made it clear that goods/services can not be priced in btc and can not be sold and paid for in btc. So thats the current stance. All companies under the china law will follow that.
http://youtu.be/rBgQFzyg8pk?t=43m37sAudience: Can you clarify as whether all merchants are not allowed to accept btc or is it only for existing financial institutions?
Bobby Lee: its both. Financial institutions cant touch it and goods/services are not allowed to be sold or priced in btc. Two different points and they both apply.
https://www.youtube.com/watch?v=rBgQFzyg8pk&feature=youtu.be&t=45m17sthat's an official statement from Bobby Lee of BTC China. 2 follow up questions from the audience answered by Bobby Lee. This clarifies the future of btc in China's economy.
You are naive. More countries will follow suit.
Yawn, great example, believe what you will, if you can provide a reasonable argument indicating bitcoin will collapse I will respond in kind, however you are just posting random tidbits of news that are neither new nor ground breaking, neither do you bother researching the other side of the argument; what governments support BTC ? what are their views ? Research both sides and then let me know.
p.s.