I propose that we do act like governments can detain you, until you reveal your password, because that does in fact happen.

I propose that people abandon the concept that they can archive their email forever, and instead use systems like a Mission Impossible Tape that self-destructs the instant you're done reading it.

I propose that the only way to stop the government from making you decipher your messages, is if it's impossible for you to decipher them.

Everyone should use Perfect Forward Secrecy systems.