> Some things are even required to be kept private (e.g. certain aspects of sexual life)
The relationship between sexuality and privacy is a very juicy topic, by the way. There's loads and loads to discuss here, but, I think, that's a topic for another thread.
I see privacy (the intentional kind, at least) as the reverse side of the freedom of speech. If an individual or a group have the right to decide, at their own discretion, what to disclose and to whom, they should as well have the right to decide what *not* to disclose.
Most people don't care about both of those because they, paradoxically, are used to their presence, and are taking them for granted. They have no clear picture in their mind of consequences of them losing those rights, which are really, really not good.