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When I decided to become a programmer and get my degree at 28... My first semester of college, the very first class I signed up for was Touch Typing.
I knew if I was going to be using a keyboard for the rest of my professional life, I couldn't get by just using the first finger and thumb on my left hand and my first 2 fingers and thumb on my right hand.
Now, many moons later, I'm still astounded that I think the words and my fingers fly around and type "all by themselves"
Then... The bastards change the "shortcut key bindings", and all hell breaks loose.
@XSGeek Muscle memory. And it's even more effective when you type a command you frequently type.