Well, I'm certainly not advocating for the "you've got nothing to hide" position. I'm not even actually engaging on the specific topic of this thread, the journalistic vs. anti-crime etc aspect of privacy.

What I'm talking about is that the technologically-driven, everyone-of-course-wants-more-privacy natural inclination will produce certain side effects that you may not realize. And at some point governments (or social networks, down to the neighbor-level) will be powerless to counter -- and again I'm not even talking about those anti-terrorist/anti-crime points. I mean the gradual degradation of a sense of community. There's a bunch of writings on this topic.