The difference between CLI and GUI is simple. The latter is highly optimized for a particular workflow and to perform a set of preconceived tasks that are baked

The difference between CLI and GUI is simple. The latter is highly optimized for a particular workflow and to perform a set of preconceived tasks that are baked with a release that gets an occasional update. If you asked me to show you why I find value in editors like vim and emacs, I'd show you a DSL I wrote for work purposes and show you the extensions I wrote to edit them efficiently. Alternatively, I'd show you a number of customized workflows for cross compiling lua to C# or something. I've used sublime text, textmate, bbedit and I'm not saying they aren't well designed editors. They are and if the stuff you are doing is stuff that everybody is doing, then great. But I don't think you understand that at this point in time, none of these GUI-based editors come even close to satisfying my personal needs as a developer.