I was the one asking the parent question (something about a comparison between Vim and Emacs). I have, since then, spent at least 20 or so hours struggling with Emacs...

And although I wasn't sure at first, I'm pretty sure it's worth it. Though many of the things in Emacs are nowhere near perfect (like the in-buffer terminal, blech!), it feels like something that can go much farther than Vim in terms of I'm-going-to-turn-my-text-editor-into-a-full-fledged-IDE type stuff. I still don't know if I'm going to stay with it, but I've promised to myself that I'll use nothing else to edit text for a month. When that's done, I'll decide, though I suspect by then I won't want to switch.