Well, I do use some of my left hand... mostly for the shift, and just now I hit the "a" and the "s" keys with it.
But 99% of the keys I hit are with the middle finger of my right hand.
Which is the main reason why I have never signed up to an instant messaging service. Waiting for my replies would be painful, and without spell check and my own relentless editing, reading them would make you embarrassed for me.
Native XWA.Netter (Nutter?)