We did not join a religious cult. It did take us to spiritual vistas of sexual beauty and unity. In 1977 a long-time friend of mine told me he wanted to try it with me. Again, a spiritual experience was found to grow from this humblest of biological acts. That, i have come to believe, is part of our neurological hard-wiring too.
Human beings seem to be naturally equipped to experience the metaphysical world.
Tantra provides both repetition and attentiveness. It is not the only way to achieve spiritual bliss, as its religious practitioners may assert, but it is one way, and that is good enough for me. The former encompasses several systems of Hindu, Buddhist and Taoist religious and physical practices that may or may not include sex acts. The latter is a term coined in the United States during the 19th century by Dr. Alice Bunker Stockham for her system of non-religious sexual metaphysics based in part on Hindu tantra yoga. This alone is a strong indication that there is a universal biological truth beneath the various forms of tantra and karezza.