No history is a feature. I like knowing that, like in real life, only people who are present can read what I'm saying.
Then I know they're reading.
>and you have no idea who might be saving logs or where they might be publishing them
If I'm in a room with you nothing stops you from telling others what I've told you.
Sure, but I won't have a complete written record like an IRC log, and won't be able to credibly quote.