honestly, who cares about that data?
Privacy is a protection against (often irrational) people who are out to hurt you.
How people are having sex, on the other hand, is pretty irrelevant to everyone except those people, isn't it?
http://theweek.com/article/index/247156/ken-cuccinellis-crus...
Why say "who cares" about privacy, anyways? Even if you don't personally need it, you needn't erode other a privacy someone else might value.
Privacy has a way of never returning once lost.