My experience is that I'd set up something like org-mode thinking, "wow, I can't wait to save hours a week by being able to juggle todo lists around at high speed without taking my fingers off the home row!" and like, that would just never be the case. In reality, all I needed was something a little bit better than a dumb text file.
ymmv. I'm sure there are power users out there who really exercise these tools to the max. But even then, I question how much time they're saving.