I have a friend who takes a combination of prescribed medication that has taken away his sex drive the past several years, and he’s into unconventional sex. I wrote to him:  When I was meditating today, I had a thought.  We meditate to bring ourselves to a stillpoint several times a day, in order to refine our perception and enable us to grasp the more subtle nuances of sensory input via our neuro physical makeup.  The more we are able to bring ourselves to a place of detachment from external stimulation, the more subtly our nervous system will become attuned to respond to the nonphysical environment around us.   If someone is in a habit of bombarding themselves with ever increasing modes of external stimulation, they are likely to lose the subtleties entirely and that could keep them from reaching certain altered states of consciousness.  Since they likely find physical life too subtle and that is why they seek more and more stimulation.   So just think of that anytime you feel you need to tie someone up or spank them in order to feel pleasure 🙂