is that the artist can make the model look like whatever he/she wants. it is about fantasy and creating your perfect (looking, anyway) creature. to some it is just fun. to others like me, it is very arousing due mostly in part to drawings being able to get away with or look like things we can't see in real life. for instance the very first pic of the girl with the dripping penis is gorgeous. i'm not homosexual or even bisexual but the thought of a beautiful woman with a large penis enjoying herself is a big turn on for some reason, even though i've never seen one in real life.