Every few years, some new IDE comes out, and people like "Yeah, Emacs is done." We've seen this so many times. But after over forty years, Emacs is still here, and it is being developed and getting improvements. I am sure, as long as the keyboard input stays the primary way to enter information, Emacs still be relevant - ten, twenty, thirty years from now.

People yet have to invent an editor/IDE that could surpass Emacs's capabilities for extensibility. Yes, certain IDEs are better suited for specific tasks, but if you need a universal malleable tool that you can bend any way you like, there's simply no better tool in the existence.

Have you ever thought about it? Almost nobody whoever contributed to Emacs ecosystem - either by submitting patches, improving documentation or publishing packages (plugins), has ever got paid for their work. I have over 300 packages installed in my config, and it is my primary working environment (in fact: besides the browser, it is my only environment). Can you imagine VSCode, Atom or IntelliJ user pulling over 300 plugins? I am not sure that I'll even work. Emacs ecosystem defies any logic, it shouldn't work at all, yet it does. Many developers successfully use it every single day. Heck, some parts of whatever IDE you are using right now probably were written in Emacs.

Yes, Org-mode deemed "a killer app of Emacs" and rightfully so. There are reasons why all attempts to port Org-mode functionality to other editors were never very successful. Org-mode is huge. It has tons of features. You can do a lot using Org-mode alone. I do things Org-mode was made for: task management, journal/diary, literate-programming, static web sites, presentations, etc. But I also do things outside of the immediate context of what Org-mode made for. I manage my dotfiles using org-mode. If I need to set up a new machine (Linux or Mac), I only need git, GnuPG, and Emacs. I don't lose anything moving from one machine to another. Or here's another example: whenever I like something on Youtube or Twitter, upvote on Reddit, push something to Pocket AKA Read-it-later (either on the phone or desktop) - that thing appears in my org-mode agenda with a deadline of 30 days. If I don't review it within that time - it'll keep reminding me. Org-mode has the best markup format, better than markdown. People write and publish books using Org-mode these days.

Yes, IDEs are more and better suited for certain languages, but there's simply no better tool for manipulating straight text. This very comment I wrote in Emacs. Why? Because there I have in my disposal all the tools I need. Spellchecking, thesaurus, dictionary, etc.

Your world has moved on, and Emacs is not a part of it anymore - fine. But don't be bitter, just because you couldn't find any value in it. Truth is: once you learn Emacs to a certain point, every attempt to do things using other tools would make you feel unhappy. Why can't everything be as configurable and extensible as Emacs?