We exchange bed sides on purpose to prevent a "my" or "your" side territorial mentality. Most significantly, it serves as a modest reminder that we do not want to live a life of repetition. Disrupting our habits allows us to perceive things in new ways. Making us more inventive and flexible thinkers. Switching bed sides also prevents us from becoming too comfortable in one position or posture. It forces us to move around and explore different parts of the body, which is good for your health in general. Finally, switching bed sides helps us avoid creating a "mine" or "yours" space in our bedrooms. This would be undesirable because it would mean that we are dividing our space up into separate areas, when really we should be thinking about what we can do together as a couple. So, yes, it's good to switch bed sides.