Pendulums swing. We see this all the time. Usually they go from one extreme to the other before settling in the place where they belong...in moderation.
The pendulum itself is usually pulled by strong vocal and influential people or groups on either end. Sometimes those people don't follow the pendulum as it settles and stay firm in their position...the remainder finds that moderation and establishes the place of peace and comfort where the majority reside.
Playing the Game of Life with Monopoly rules.
Monogamy might just be in my genes
Poly Events All Over