I have been using Emacs since 2010. What started as this 'what do I do' white screen has evolved into a powerful tool.
During this time, I have seen various other editors or IDEs all considered to be "better" but are eventually tossed aside in favour of something else.
Visual Studio (the IDE) has gone through some changes. Some for the better. However, there is also worse. It is slow and bloated.
Now we have Visual Studio Code which a lot of people seem to use, even those that judged me for using emacs a few years back. But... IDEs are better, right?
We also have Sublime Text 2 which was all the rage around 2013. Even they were laughing at me for using emacs. Now, I hardly see anyone using it.
Once in a while (in the last 15 years) I see the odd vi or vim user. They continue to exist like me with emacs. While I cannot confirm, I would not be surprised if most of these have moved to neovim or gone elsewhere.
Point is - emacs will be around for many years to come. It may never be the "best" in term of numbers but I would not be surprised if, in the next 10 years, Visual Studio Code or Neovim have moved on to some other new editor or IDE (or another vi variant, respectivelt) yet emacs is still there.
I have been using Slack properly in the last few months and I am not really that impressed with it. Sure, I am not using Emacs and I would not be surprised if there is emacs support for it. I would not be surprised is Slack is replaced by something else in 10 years. No different to other "management" tools that come and go.
So heres to Emacs. For me, it is worth it - and while things always change... emacs is likely to be about for some time.