Comment: Everything Should Be Email (Score 1) 139
Email is actually an excellent form of communication. It's so flexible that every realtime and async messaging system could be usefully transacted over email (and often is), at least every message could use the email data formats (Subject/To/From/Cc/Bcc/Attachment/Body fields, MIME headers, X-whatever arbitrary tuples, etc). In fact every message sent with at least one human endpoint should be transcribable into RFC822/etc emails as a test of its utility and completeness. I had a friend in the 1990s who firmly believed TCP/IP should be restandardized with every packet required to be formatted as a separate email. That's too far (unless packets were bigger), but not wholly wrongheaded.
I hope email never goes away. I do hope that email gets much better message databases and presentation UIs, better integration with non-email messaging (in the same, integrated messaging systems). For example I'd like my every Slashdot post (and other Web transactions) to be indexed in my own storage in email format, and I'd like my emails to be able to HTTP POST/GET/PUT from my MUA. I hope that email finally gets better standardized structure of message bodies, especially for quoting by pointer with attribution, and more nonlinear structures of message sequences. Especially branching and quoting multiple previous generation messages, as well as from separate threads, in a single reply, which maintain coherence among threads.
But that's just better email, not post-email. More and better email would make the world a better place. I hope it does.