My CS instructor once asked everyone in the class to "raise you hand if you still use an email client." My hand was the only one that went up, and a couple of people laughed and said "really?" I think that was almost 10 years ago.
Students don't have office jobs. Get a real job and suddenly things like Outlook or TB make a lot of sense. Webmail is ultimately overly limiting compared to a native client for many common work-related use cases. Not to mention, your phone email app is an email client. I like to think of myself as being minimalist and flexible in some ways, but if I started a company tomorrow I could see myself springing for Outlook…
Exactly what work use cases have I been missing out on?