If I would type at 15 WPM, I would be MUCH less productive than I am today for sure.
The point of using Vim, is that you boost your keyboard interface to the maximum. Obviously, using Vim, means you touch-type. Also, you don't use the mouse. Basically, using Vim, is like having the brain hard-wired to the computer for every task, not only text edition. Everything you do goes through the keyboard, and you don't have to think about it. You scroll through text, search for it, edit it, open new files, etc.
For instance, most of the time I don't use any GUI for Git either. I do everything in the terminal, and only use the GUI for partial commit (ie. select which line to commit). I have dedicated aliases for getting history, etc.
Also, when learning Vim, you notice that many (Linux) tools have Vim shortcuts enabled. I discovered many of them by chance, out of the habits of using Vim shortcuts.
The point of using Vim, is that you boost your keyboard interface to the maximum. Obviously, using Vim, means you touch-type. Also, you don't use the mouse. Basically, using Vim, is like having the brain hard-wired to the computer for every task, not only text edition. Everything you do goes through the keyboard, and you don't have to think about it. You scroll through text, search for it, edit it, open new files, etc.
For instance, most of the time I don't use any GUI for Git either. I do everything in the terminal, and only use the GUI for partial commit (ie. select which line to commit). I have dedicated aliases for getting history, etc.
Also, when learning Vim, you notice that many (Linux) tools have Vim shortcuts enabled. I discovered many of them by chance, out of the habits of using Vim shortcuts.