It's more than just time savings; remember in "Peopleware" how they said even a one minute interruption really meant 15+ minutes of getting back into flow? If y

It's more than just time savings; remember in "Peopleware" how they said even a one minute interruption really meant 15+ minutes of getting back into flow? If your dev environment gets in your way every time you use it, it will be like trying to drive a stickshift if you don't know how. As was said in "Pragmatic Programmer", your editor should be an extension of your hand; if you're always having to reach for the mouse to do something, it's like a cache miss (another great analogy, from Steve Yegge's "Effective Emacs"). While this doesn't have a whole lot to do with a specific editor, I have to say that most "modern" IDE's I've ever seen suffer from too much mousing, and you can recreate their useful features in Emacs. I still love vi (and use it for quick sysadmin tasks), but there's a reason I have the Firemacs addon installed in Firefox.