Not everybody has the option to play the game the same way others do. Due to a medical problem, I only have limited use of my left hand. This makes it impossible for me to play the game with a controller. I can handle keyboard or mouse but have trouble with keyboard 'and' mouse. I have found many ways to deal with this using keybinds and macros though and my only noticeable (to others) problem is my slow typing. A keyboard only option would be helpful to me but not necessary. As is, the interface is still one of the most adaptable I've found, which is why I've been here since PH3 beta.