I'm guessing you've never flown a plane before. But I can tell you that for me it feels more natural flying with my left hand. Yes I am right handed, but as said above when learning to fly you sit in the left seat and use the left hand on the yoke, right on the throttle.
In a plane with a yoke how do you think a right handed captain uses the throttles with your theory on right handed people using the right hand to fly the plane?
Jamo