I'm wondering this because is such a real threat to bank system and we all know how banks and governments are tightly linked !
BTC could make people more autonomous, self-resilient, being their own bank. You can use it like cash, making your transaction almost untraceable (or untraceable using e.g. monero or dash or laundry systems) : this is governments worst nightmare, isn't it ?
Because most of the governments understand that Bitcoin is not totally illegal it's just a currency the transaction made by in the people are illegal it doesn't mean that they will Ban Bitcoins in every country Bitcoin is not having any fault yeah after some days maybe Bitcoin will not be and animals anymore it can be traced so the transactions can be traced and the illegal people will be caught.