They deaden the impulse to inquire constantly into the generosity of Nature and to discover who we are as human creatures. In this respect, I find the concept of polyfidelity very relevant. The appellation itself is quite felicitous in so far as it captures the good old flavor of sexual freedom in its cleanest sense. It's surely not simple to carry on several genuine relationships at the same time. It requires being faithful to one's ever-expanding self, to one's innate sense of freedom while being equally true to the other's innate freedom.
Sexual freedom is based on deep respect for oneself and for the other.
And as long as we don't regard the other as a free being, we are not free. The practice of sexual freedom is quite different from promiscuous behavior. While often unaware, craving for self-gratification governs promiscuity, sexual freedom on the contrary implies a conscious, deliberate choice. It entails an honest and respectful responsiveness to one' s own sexual desire as well as honesty, respectfulness and responsibility toward every single other person. We all grow up having several relationships at the same time.