The governments of these countries are simply afraid of Bitcoin and not without reason. They may cook up whatever excuses like Bitcoin being used for criminal activities such as money laundering and terrorism financing (as if cash weren't used for that as well, and likely with even better results), but the harsh truth is that Bitcoin competes with their local currencies and may eventually outcompete them. It is like the US dollar which everybody loves but which the governments can still more or less control through foreign currency exchange operations carried out by banks (apart from cash transactions, but these are small overall).
I think that countries see some danger in bitcoin cause of it is controlles currency and there priests or some other dark activity can use bitcoin for their stuff.