The ability to use Emacs with a decent degree of proficiency. I find its text navigation abilities beyond compare. This is huge for me since I write software

The ability to use Emacs with a decent degree of proficiency. I find its text navigation abilities beyond compare. This is huge for me since I write software and and the creation of software generally involves a lot of text manipulation. This is perhaps less of an edge now that other IDEs are better at autocomplete and jumping around the code than they were when I started learning Emacs. On the other hand, the fact that I can write Windows applications, compile them using Microsoft's compiler, launch them, and follow their log files all within Emacs is wonderful. So between the keybindings, 3rd party packages, and flexibility it not only makes me more productive but also helps me have more fun and stave off burnout. (EDIT: Readability)