I still don't think you get it. In boxing the fighters use the gloves and keep their hands close to their face. This works because the size of the gloves provide a kind of cushion or shield. In real life without gloves, the punches will slip through and smash your face.
2nd, You use wrist wraps in boxing which secure the knuckles and keep them in place. In real life you dont have this, which is why a lot of boxers who get into bar fights end up breaking their hands when they punch.