Our government has been eavesdropping on us since the telegraph. Accept it, get over it. I don't worry because I am a "good ole boy". If they watch the likes of me with an iota of interest, the world must indeed be safe and boring. 99.99999999% of us are boring as hell.
We may all be safe from official government sanction, but that data isn't just being thrown away, and you don't know who has (or will have) access to it. The people who work at the NSA are people like all others, subject to corruption and incompetence like everybody else. That can, in the absence of proper oversight (which doesn't exist for the NSA) situations like the following:
I have (well, had) a friend who grew up in the USSR. She told all sorts of lovely stories about how the guys running the archives where the secret police dumped the files of people they weren't interested in any more would skim through the data and then go around blackmailing people (including stuff like having young teens rob their own families for them if they didn't want all their embarrassing secrets told to all their peers - you can imagine what that did to some families), or selling blackmail material to neighbors with a grudge. They got so notorious for the actual secrets they'd revealed that they could walk up to people they had nothing on and get money out of them with remarks like, "Say, that's a lovely reputation you have there, it'd be a shame if something were to happen to it..."
Wikileaks (which you reference in your sig) has already shed light on some of the modern-day shenanigans our public "servants" are getting up to, as has the UK tabloid fiasco, and those are just two very recent examples. Do you seriously trust those people with all that data, even if you aren't breaking any laws? Could you trust your friends, family, and neighbors if all that data were to suddenly start "leaking" and it became trivial for others to blackmail them?