I have an aquaintance that was falsely accused of vehicular homicide because he had a car whose description was close enough for the police and he had to spend a decade in the legal system fighting for his freedom. And all of this is made possible because the police have access to records of which cars are owned and by whom and they can look at it. Should we not let the police use this information since this one indi…
I think this is the third time I'll make this post on HN, but it's been relevant every time.
Privacy is not about having something to hide, or about keeping things secret. Giving the government the power to store all this data about you isn't bad because they might learn embarrassing things; after all, it will most likely only be read by a computer.
But it gives the government enormous power to make decisions about you -- decisions about whether you may take a commercial airline flight, get a security clearance, or even get a job -- without your knowledge or consent, and without you knowing how they make the decisions. It's not Orwellian, it's Kafkaesque.
In short, a lack of privacy gives the government the power to be even less transparent in its decision-making, and gives it yet more power over its citizens. It's not a question of discovering your fetishes or being embarrassed, and we shouldn't respond to the "but I have nothing to hide" argument as though their conception of privacy is right and having nothing to hide really is an excuse.
There's a rather good paper I can recommend on the subject: