People realized this and created what we call now POV which stands for 'Point of View' and basically it is a style of filming porn that consists in shooting from angles that give us a first person perspective of things. I think the most important reason why we love porn is because it gives us the chance to see how stunning, drop-dead gorgeous babes look like while fucking and the dude's dick is an extension of our own, creating the illusion that we're the ones doing the fucking.