I actually try very hard to do everything with the keyboard. I'm an emacs zombie, though I'm sure the vim-o-nauts would agree: mousing is just really inefficient. BUT! It depends on what you do. Occasionally I have to break out the graphic design “skills” and for that, I have my Mighty Mouse. I don't know that I would recommend it, it's pricey, some people like having a tactile right click (me, I just disable the shi…
I do agree with maximizing keyboard usage (as I tend to spend most of my time in Vim). I was suffering from "mouse thumb" and recently did an experiment with my office PC. I removed the mouse completely and turned on the MouseKeys accessability option (using the numeric keypad to move the mouse pointer around). After a couple of days, it felt as natural as using a mouse, and my thumb felt a lot better.