Mario Jason Braganza over at Janusworx has what amounts to a love letter to Emacs. Three and a half years ago, he started using Emacs. His post is a list of “If you had told me then”. Some of them, such as using Emacs as his primary editor nearly everywhere, are obvious and conventional and could be said of any editor that a user has committed to.
Others, such as Emacs is not an editor but more like a whole computer with an editor bolted on, is much more specific to Emacs. He also notes that Emacs is not just for writing but can be used for tasks not related to writing such as using Org mode to organize his life and keeping what he calls his “commonplace book”.
He lists other, more complicated tasks as well but the point is the same: if you told him three and a half years ago that he would be doing these things with Emacs, he would have thought you were crazy. He ends his post with a wish for three and half more decades of the delights of Emacs.