I think it allows us freedom from the stereotypical associations of our mundane existence; from the rigid relationships and thought patterns we are supposed to use, by training and then habit, to eat work clean, etc. Very much like musical creativity. It's a kind of mental freedom (that we need). Instead of "this is what you are supposed to accomplish with this thought pattern," You have "This is what I CAN do with that thought pattern." It's manipulation. Control. Freedom.