It's gotten to the point where I use a tiling window manager on my Linux distro with all controls Vim style. I have a Firefox add-on to give it Vim controls , and I use Vim for basic word processing. I can control almost every part of my OS, excluding Skype, purely through my keyboard with virtually no mouse involvement.
It's all very addicting once you get used to it.
Also: many text editing actions can go from conscious (using a mouse) to subconscious (using the keyboard + muscle memory).