I'm right handed. When I played piano the left hand part was easier. Later I took up guitar and I used to wonder why the left hand was on the neck. Chords and riffs with the left hand were much more involved than moving a pick up and down with my right hand. And in terms of finger picking, most styles are sort of repetitive and don't require much thinking, while my left hand is having to jump to different positions in a flash. When I took up bass I used two fingers on my right hand to play. Much easier than finger picking a guitar. But my left hand was dealing with frets that are further apart than on a guitar while moving around the neck. So it strikes me that my left hand has the harder job. And that left-handed people go out of their way to find an instrument to give their right hands the harder job. There must be some sort of sense to all this, but I can't figure it out.