I guess I never thought about it this way. The only time I ever did anything significant with my non-dominant hand was when I used to play lacrosse, and I had to shoot and throw the ball using both my left and right hands. Of course the purpose of this was trite; become harder to defend.

Anyway, using my non-dominant hand for trivial activities sounds fun. At the very least, should I lose my dominant hand in a light saber duel in the future with a man who claims to be my father, I'll know I've got an adequate backup.