I personally do not care about privacy. I see no reason why I should.
It's just my opinion. I know other people do but please don't generalize.
Assuming that you don't care about privacy because you're apathetic, do you also not care about free speech because you don't say anything controversial? Do you care about your right to assembly even if you don't protest anything? As an extreme example upon which to build a baseline, would you mind if a neighbor had unmitigated access to watching you lounge in your underwear, take a shower or have sex?
Why do you not care about privacy? Do you feel that you don't need it because you have nothing to hide, or are you willing to sacrifice it for some greater good (e.g. terrorism etc.)? Are you merely indifferent or do you aggressively oppose the concept?
1.) Free speech is a completely different topic. Snowden's quote on this page makes no sense to me no matter how often I re-read it. If free speech didn't exist I wouldn't be able to express my opinion about privacy :)
2.) Privacy means hiding the truth. Hiding what really happened. Hiding who you really are. I believe it is a flaw of the human personality that makes us want to hide information and eventually lie about it.
I don't care if Google or the government knows that I'm searching "[insert embarassing keywords for you here]" or if Facebook knows my location, or if Twitter knows what I like based on the people I follow.
Who is the government? It's people. People like you and me. If people decide to make assumptions based on data they collected and the assumptions aren't correct it's their own fault for assuming something in the first place (because...you know...it's an assumption...it can be wrong).
I am not aggressively opposing the concept of privacy. I respect other people's opinion.
What if the assumptions they make raise the premium on your health insurance because someone sells your data? People (or, more likely, algorithms) making wrong assumptions, even if it is their own fault, can affect you negatively.
There's also the chance that those algorithms and assumptions are "correct" from a business standpoint (it would cost more to "fix" them than the monetary benefit of fixing them) even if they're not correct for consumers, meaning nobody that's actually in control of them has any motivation to fix them.