Why should there be a difference between a wet dream, masturbation and real ?

Real is the product of the perception of our world through our five sences. Dream is the perception of the world through our subconsous mind. Masturbation is the deliberate involvement of our conscious mind in the perception of the /fantacy. All lead to the same, . Why then is the highest value placed on real ? You can trick the mind through hypnosis to achieve the same effect.