Did you know most ambidextrous people are left handed !?
Because most thing ( well most things ) are made for right handed people left handed learn to use theiright hand in the same way as a right hander ?
To be a truely ambidextrous you must almost use which ever hand is simpler to use ( if it on the left use the left ... ).
The devil is left handed.

Polar bears are left handed too ( don't know how that's work out I've never seen a polar bear with a pen in their paw ).
Left handed people die younger than right.*
Left handed people suffer more stokes but recover quicker and better than right hander .*
*An ambidextrous person can't tell which one group they fit in ?