Definetely it's bad! THe banning stops growing of the usuage of Bitcoin! It's gonna be a bid diadvantage to Bitcoin!
Bitcoin is worldwide used almost in all countries so I think its development cant be stopped. I agree it development will be a bit affected if too many countries banned it but now bitcoin is a need of the world. The system of world cant run properly without a digital currency because the online payments cant be done with physical currency and I think in all digital currencies bitcoin is the best and the easiest to use.