Let us imagine that someone out there doesn't like the fact that you don't care about privacy and thinks that you should. In a world without privacy where everything is under surveillance that someone can simply recreate reality so that you are now a criminal. Hell, they might just smear you on twitter as a racist rapist and post a bunch of fake data. It won't matter what the truth is any more. Allowing the state to trample all over privacy will only make such activity easier and more prevalent. Worse it can create the illusion of 'authoritative' truth which is even easier to manipulate.