The truth is, Killing bitcoin would be the best thing ever hapened.
Because when governments killed bitcoin, it will come again; bigger/longer/uncut/stronger/faster/better.
I hope you are right, and as history indicates governments eventually retreat you could be right, it would be wonderful because that means that at end of that process our governments will be more democratic and less totalitarian, but there are few issues with your optimism. The first one is that the current shape and demographics of Bitcoin doesn't really justify such optimism about a strong come back. Currently Bitcoin is dominated by Chinese and you shouldn't expect from the traditionally loyal East Asians citizens to stand up to totalitarian oppression. Try it, go ahead and criticize a fucking communist leader or the fucking undemocratic Chinese political system front of a Chinese and you will see the reaction: your audience will be offended how dare you are to criticise their communist dear leaders. Those Chinese Bitcoin supporters will never challenge the authority of government. They take advantage of the system, as usual use this western innovation but don't expect the Chinese will save Bitcoin. If it happens what you predict - and again, I hope it will eventually happen - then that will be driven from the west, but the issue is that Bitcoin in the west struggles to gain popularity, so it will be a long-long process. Also, the west is not in a lot better shape at all than Asian societies (terms of resistance to the government), but at least here we have some traditions of standing up for human rights and democracy which could be the base for the resistance about Bitcoin.