While looking at all this, I was mostly considering the potential privacy implications. Then again, with the amount of stuff we push online these days, it's seems somewhat comical to even consider it. That alone is weird.
Then I read up on it and realized that secrecy of correspondence isn't really that much of an established principle internationally as I have been accustomed to, living in Germany. (It seems like France even had the death penalty on it for a while.)
Still - Paying a service 5 bucks a month to invade your privacy* just seems a little more real when it is about actual stuff, not just things that are bits and bytes anyways.
*And don't tell me it won't happen. It will always happen. Somebody other than you will have or get access to that data.