Org-mode it's just a mode, Emacs has a ton of modes, major and minor. The GNU Emacs Distribution, the Vanilla Emacs, already comes with org-mode.
It was six months ago. org-mode blown my mind. It was a transcendental experience, I was thrilled. It had everything I wished and much more. Thanks to it I discovered Emacs and I love it, it makes my life easier. What's great about Emacs is that you can solve any question you have with the manual, it's awesome, mind-blowing.
But It has a steep learning curve. I got through vim tutorial in less than an hour. Going through Emacs tutorial took me 4 afternoons, one our every day. It was 4 days because it's too much for one sitting. I almost gave up, I am happy I didn't. You have tot taking it slow, there are a lot of crucial key bindings you have to learn.
If you like writing or ordering idea, notes, etc. I recommend it, at least try it and then decide for yourself. But you have to put some time to get familiar with the Emacs ecosystem. Take it like a pianist, slow and steady makes you learn twice faster.
I am just a novice but this summer I want to try to learn more elisp and try to make one package. I hope this is not off topic. Emacs fits the description of the article, right?