The blade and chalice observance may be less embarrassing to repressed people, but in my opinion the intrinsically violent nature of the blade does not contribute much to the desired revelation about the Creative Love and mutual adoration between God and Goddess. Loving and spiritually meaningful sexuality and sensuality also helps us connect with the Mother Goddess. Mothers who's sexuality grows out of love and compassion teach their children that sex is spiritual and not something merely to be exploited commercially. I believe it is very important to celebrate the integration of sexuality with spirituality, spirit with desire. Our bodies are sacred.
Sex is the spark of life, and a gateway to ecstasy.
Sexual energy is one of the most important base energies in spirituality and magick. We use this energy in everything Creative that we do. Therefore, Sex and Sexual energy plays an important role in our spiritual practice. The role of sex play is crucial in spiritual practice as it generates more energy than almost any other activity I can think of. This energy can then be directed in the area the spiritual practitioner wants to focus.