They are not irresponsibly sexual. What they represent abstractly are the great potencies of the universe. The Yang and the Yin, are personified as the God and the Goddess. These exist both externally and internally in each of us. They are both personal and immanent, and they are impersonal and transcendent.
Freedom of choice is essential to our Pagan view.
Freedom is inherent in all that has become self-conscious, and thus it is that which we hold makes us differ from the amoebae and the cockroaches. Our sexuality reflects this choosing. We may wish to fornicate as often as we can, with whomever will allow us to do so, or we may wish to be celibate. We may want to parent families or remain without progeny. There are Pagans who do all of these and more.