Paul Reed Smith doesn't like to make left-handed guitars because, in his words, "They don't make left-handed pianos."
And he has a point. You can fret just as well with either hand if you learn that way. Baseball players field grounders with their non-dominant hand simply because they need the strength of their dominant hand and arm to throw the ball. But fielding it is the hard part.
Back when I was teaching guitar I'd try to convince the parents of left-handed beginners that the student would have an advantage if they had a right-hand guitar because (at least at the beginning stages) the fretting hand needed more strength and coordination. I was usually met with accusations of trying to "force" their kid into "conforming".