I don't really understand how you could ban bitcoin. Is it feasible practically? Surely it would be quite simple to hide your bitcoin transactions using mixers, VPNs/Tor etc?
That is right but if you cant convert your bitcoin to your local currency,you eventually will lose interest in bitcoin and thus banning bitcoin can reduce number of bitcoin users in btc banned countries
and this will make you to stay away from bitcoin. but i think the world will still continue even if there is no bitcoin found by satoshi. bitcoin is an alternative solution for us to make investment for long term, and of course for make money.