I understand here on HN it looks so obvious, but if you stop and think for a moment it is no natural at all.
The only natural way of having a private conversation is directly from mouth to ear. Private remote communication never existed until recent technology made it possible during the last decades.
We are in the same situation as cars, where people have been walking for millions of years but little more than a century ago we got the ability to move freely along longer distances at previously unimaginable speeds.
I'm not against private communication, as I'm not against cars, but it's just normal that new things get regulated in a society. All countries are OK with driving being regulated (get a licence, always show a readable registration plate...), so why are we shocked every time someone proposes to regulate remote conversations?
I also understand the point that encryption is either breakable by nobody or by everyone (thus the thing about only authorities being able to eavesdrop is moot), but please stop assigning to a pinnacle of modern technology the same status as a natural human right.