Emacs is not so much an editor as it is a tool well-suited for writing custom editors. This is why Orgmode is so great and why its Emacs implementation is peerless. I used Orgmode for some time. I was not really an Emacs user. I used Orgmode and my Emacs use was incidental to that.

If there isn’t already a good mode for what you want to do, Emacs is good only if you want to write the mode. For instance Haskell support in Emacs is not great; the most-used mode is not part of GNU Emacs and falls well short of the quality standards of the modes GNU ships. I found myself trying to do Haskell in Emacs because I already used Emacs for Orgmode. This was a mistake. I was better off doing Haskell in Vim.

So for stuff that has a good mode—Org, lisp, C, mail if that is your kind of thing—use Emacs. Otherwise don’t bother, unless you like programming your editor.