The reason we hate opening our inboxes is that many emails, like the "kitchen sink" email, are too difficult to tackle. Emails like this paralyze us and stall our to-do lists. If we can just agree on a few things, email can be easier for everyone.
Just a note about the presentation: When you get to the slides about Axiom #8, have your audience read each statement out loud. This will quickly make the point about why we should use emoticons in email.