The naivete here is hilarious. You don't trust THE MAN but you're ok with companies having your metadata because "they're not going to do anything with it." News flash bozo, they do. Google has been scanning the shit out of your emails for YEARS looking for key-words to send you targeted ads. Is it nefarious ? Maybe, maybe not. But they're still snooping on your private conversations to try and make MONEY off of your ignorant ass.
I still remember 5 years or so ago, I had a big fight with one of my best friends. I sent that person a long email detailing my grievances and explaining why I was pissed. The VERY NEXT FUCKING DAY, my gmail inbox was advertising a book on how to "repair friendships." Needless to say, I was weirded out, but I didn't cry like a little bitch about my constitutional rights.
And the latest:
http://www.engadget.com/2013/07/22/gmail-email-ads/
Now they're disguising ads to look like unread email !
I'll also add, what companies like google does with our metadata isn't in dispute. It's as plain as day and we all know they use it to make profit off of us. But it isn't obvious what the government does. All your complaints on governmental abuse of citizens' data is speculation. I'll bet my left toe that even after snowden blows his load, there still will be no evidence of actual abuse of any individual's personal information.