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.
Who said anything about lying being a part of a desire for privacy?
I don't care if Google or the government knows that I'm searching "[insert embarassing keywords for you here]
Would you care if a prospective insurer knows you're (hypothetically) searching for "atrial fibrillation management" or "opiate addiction"? Or a prospective employer who knows you're (hypothetically) searching for "corporate firewall security exploits"? Or a prospective romantic partner who knows you're (hypothetically) searching for "genital rash"? Any of those searches could be legitimately borne of pure, unadulterated curiosity, but taken out of that context by people with whom you're hoping to establish some kind of relationship, they could easily doom that relationship before it begins. Hell, those searches may not even be made by you but by someone in your household, but if decisions are made and opinions are formed based in that information, you've suffered an unnecessary loss.
Who is the government? It's people. People like you and me.
Indeed, people like you and me, except those people have the authority and/or power to incarcerate you, or impinge on your rights in other (less direct/more insidious) ways. Privacy isn't about hiding the truth from those who have a need to know it, it's about controlling the context of that truth, or at the very least, having a say in any response that comes from the truth being discovered.
I think the negative effects there are largely due to how private we are. If we were constantly confronting these things that seem embarrassing or concerning, we'd come to realize how normal they are.
It would require a completely shift in how we view privacy, one so large I doubt it would ever happen, but I think those are ultimately a symptom of the current system, where we often keep things private for the sake of societal or cultural norms, sometimes to personal detriment.
I'm not particularly arguing that either way is inherently right or wrong - but I do think the consequences you speak of are only meaningful in a world where a large measure of privacy, at least between most people in their day to day interactions, exists.