IF the whole world ban BTC at first BTC will Crash very hard but only for a few month, Demand will be increased while there will be no Legal Seller, All trade will go to undergrand and Black market and illegal traffic, sellers will start to selling BTC 50 X more than current price. BTC will be more expensive, As simple as that,
That was an answer for these who said BTC will die if whole world Ban it, So no BTC never Die.
I agree that bitcoin will never ever end but I don't agree about having the value of bitcoin go to a million if all the countries in the world illegalize it. Even though the trades are not conducted on the black market alone anymore, we can see that there are progress although the things that affects the value of bitcoin negatively grow in numbers, so do the things that affects it positively. So we should not be hoping for bitcoin getting banned worldwide instead we should hope for more exclusivity.