At that point it will be even more useful as a currency.  People will start to spend it, use it, and transact in it, not having to trade out to fiat.  Whether that point will be $500,000 or $5,000,000 is an open question, but it will probably be in that range.  The sooner it gets there, the better for everyone who owns it, and most importantly, better for the world.  Bitcoin takes power from those who have used government to seize it and gives it back to the smallest minority in the world, the individual. 

As above, to the OP, bitcoin is freedom.  Every person can use it as they wish, however and for whatever they wish.  Bitcoin isn't about "control" or complaining about someone using it in a way about which you don't approve.  Too bad.