I don’t have a lot to add. Both Ian and Star talk about leaving Wiccan Mystery Traditions. I have never felt the need to leave mine. Star talks about how participation in a Mystery Tradition can be short-term (like the Mysteries of Eleusis–attend once, never forget), and wonders whether it’s actually a religion. To me, I see exoteric and esoteric Wicca as two sides of the same coin. Participating actively in the Pagan community is something I encourage, even if you find public rituals weak or silly or whatever. I have loved and mocked and enjoyed and been bored by all manner of Pagan rituals over thirty years.
My ritual life is Gardnerian–my Mystery Tradition suits me fine–but Pagans are my people. In Judy Harrow’s badly-named book Wicca Covens, she says “Witchcraft is not a religion, but a committed religious order. Our religion is Paganism.” I’ve always really liked that; I think she’s hit upon something important in how we express ourselves religiously.
Star Foster said “What you believe matters as much as what you do,” and Ian responded “I tend to see beliefs as ephemera, compared to traditions.”
I have for years told students that Gardnerian Wicca is not orthodox (strict in belief) but orthopraxic (strict in practice). Believe what you want–we’re not the Thought Police. If the religion is true; if the Gods are present and the ritual reaches Them, if the Mysteries reveal to you a connection that is Mysterious and profound, then your belief, your understanding, your spiritual connectedness, will be informed by that and emerge from that.
Do the rites. Worship the Gods. Belief will follow in a way unique to the individual, and yet the coven will be of one mind because the practice and its results bind us together.