When man and woman enter the sexual act, they connect two very complex organisms. They connect them where the most powerful energies are in the body: the sexual organs. In those organs are the root forces of creation. Normally, when we are not in the sexual act, all the powers that come into us, the power to be alive, descends through these three nervous systems and reflect the three forces that create, which are represented in religions as Father, Son, Holy Spirit; Kether, Chokmah, Binah; Brahma, Vishnu, Shiva, etc. Those forces come through our three nervous systems. The ultimate expression of that energy - which is creative - is sexual. So when we unite man and woman sexually, that creative fire is lit.
That circuit overloads and the energy escapes into other areas. This is what the orgasm is. It is an overcharge of energy. The orgasm is an explosion of energy that escapes from the conductors that should manage it. That overcharge spills out of the sexual organs, out of the chakras, and into the surrounding ganglia, into the nadis. This is why people experience tremors, shaking, vibrations, involuntary shudders, shouts, screams, etc: the energy of Eden is racing thorugh the nervous systems. We think it is "pleasurable," because the root energy is from Eden (bliss), but what we do not realize is that a short circuit destroys the conductor. That is, the orgasm destroys the nervous system, gradually.
This is why people who have a lot of (peak orgasm) sex, gradually lose their sexual power. People who repeat the orgasm gradually lose the ability to have it. They become impotent or become indifferent to sex because their energetic centers become burned out. (This happened to both of us).
Now, this is why many people take chemicals to stimulate their sex drive. This is why pornography became so popular, because it is an artificial stimulation for the sexual energy. This is also why people move towards more and more extreme sexual interests, because the areas that stimulated them previously become "burned out."
The problem is that people are so addicted to the sensations of the orgasm that they do not realize that their own sexual energy is destroying them. That energy is put in the wrong places. That energy which is extremely high voltage is put in places that cannot manage it. People go mad. The brain gets messed up. The nervous system is depleted. This is why people who are addicted to masturbation and sex develop all kinds of mental and emotional problems. Many of them end up in sanitariums. We do not hear about this in the media, but if you look into it, you will discover it. Anyone who has worked in a mental hospital will tell you that most of the people there are addicted to masturbation. Why? Because of desire run amok.
As the explosions of that energy destroy the nerves and organs, it takes more energy to feel anything. People become desensitized, so they seek greater and greater forms of stimulation, in other words, more extreme sexual practices, little by little, lifetime to lifetime, gradually. Subsequently, the mind degenerates, the heart degenerates. The person becomes more and more of an animal. You can look around in the world and you will see the evidence of this.
Sacred sexuality is a return to the natural function of the body, one in which the short-circuit of the orgasm is no longer causing harm, and instead, the sexual forces are retained, which vitalize the entire body, preserving our sexual potency rather than wasting it. Even those who want children can have them; it only takes a single sperm to make a child, not the several million lost in ejaculation.