Why bother with Emacs and workflows?

I’ve written several posts on different ways and tools available to aid productivity, and probably a lot about Emacs. My background is in computational physics, and not in programming, and yet Emacs has been an indispensable driver of my daily workflow for the past 3 years. The fact is that knowing Emacs (or Vim), or having a custom configuration is not a wildly marketable skill, nor is it mandatory to achieve spectacular results.