The four seasons are nature’s way of reminding us that change is the only constant. Each one brings a specific energy, a job to do, and a lesson to learn.

In spring and autumn, the tilt is neither toward nor away from the sun, leading to roughly equal day and night lengths globally. Characteristics of the Four Seasons Season - National Geographic Education

We aren't meant to stay in one state forever. We need the rest to appreciate the action. We need the cold to appreciate the warmth.