There is next to no chance of there ever being a serious Bitcoin ban because it doesn't really have enough of a following for it to make sense, in most countries, and most countries also realize that it makes more sense to tax something like Bitcoin, since it is an economic asset and not any kind of military or intelligence one. If you ever want to rule a country but not have to have to deal with riots and those demanding independence (most of the time), it is far better to get a tax going on the people than to try and control them entirely.