Linux/UNIX users are convinced of the superiority of keyboard control and CLI tools, but studies have shown that the mouse is faster for almost all common tasks.
Keyboard input feels faster because there are more actions per second.
Do you think that daily CLI Linux/UNIX users might have a different list of what they consider "common tasks"?
Replying email, copy/moving files, writting document, etc
I use it for:
Arbitrary deep searches in specific root trees. (Where did I make my definitions of foo last time?)
Generating 20 different formats of documents. (Yay for supporting a bunch of platforms.)
Rewriting codebases - this might be the closest to "writing documents". (Mostly git things. And most git GUIs are... Trash.)