The way things "should be done" is the way people want them to be done and are used to them being done.
All this "intuitive" BS is nonsense. What is "intuitive" about seeing a bunch of conversations in your GMail inbox over a bunch of individual emails? There's nothing in human instinctual behavior that would guide that. We know to do something like that because we have learned how to do it.
And there is just no reason to have to learn a new email system like GMail when we have all already learned how to use mail clients that show individual emails. I still can't get anything done beyond the most basic tasks in GMail because of the stupid conversations and labels, and I've basically given up on the whole service because of it. I used to use email for everything, now I use it as a last resort - I use Outlook Express for most other things that I can't use Outlook for. (My version of Outlook Express still shows individual emails; I didn't realize there was a version with conversational view. Now I know to avoid it.)
You know what I wish people would stop doing? Assuming I'm too dumb to read individual emails, but smart enough to learn a whole new system of GMail conversations that I've never seen before. And I'm sure a lot of other people feel the same way.