The idea that you lose life force after every ejaculation mostly comes from the ancient Taoist teachings from China, about cultivating erotic energy by experiencing intense, prolonged sexual stimulation, but then retaining your semen. This idea can also be found in the Tantra teachings of East India.
QUESTION: Bruce—I’ve looked at your site, which is great, and you seem to talk about masturbation being spiritual. How can this be, when religions and lots of people condemn it? Of course, I like it personally, that’s why I’m here. But spiritual? I don’t get that unless it’s, like, worshiping cock?
RESPONSE: Most definitely the pleasure your penis provides you with alters your consciousness, takes you into an exalted state, and can take you into a realm beyond words that some guys call gooning or monkey-bate babble. With all due respect to those who take religions seriously, those last experiences I mentioned remind me of “speaking in tongues,” or “glossolalia.” How can anything be more spiritual than these states where you go out of your mind in ecstasy, and enter the void of total oblivion? Each time you come back, is like a rebirth, right? Of course, you don’t need to agree with any of this.