I'm relieved it doesn't seem to be an age thing. I have a nephew in his 20's who doesn't care at all about privacy and happily gives away all his data, so sometimes I wonder.

I know people here in Germany, far older than my 35 who give away every single bit of their privacy (and in that the privacy of their communication-partners).

For example: We have the so called "Spackeria" a post privacy movement, that arguments for not only willingly omitting every form of privacy, but to be brutally open/honest about everything in your life - and they really seem to mean everything.

And I know of people in their early twenties caring strongly. So no, it does not seem to be an age thing, but more of a ideology thing.