When the earth as a planet and its and moon were developing. The moon actually gave the earth the stability that is needed to bring consistency to its chaotic climate and ecosystems. This gave life a chance to begin and evolve. This stability and gravity enabled seasons to begin to cycle. Weather may be somewhat predictable. As the earth less likely to wobble on its axis. The lunar cycle isn’t just one of waxing and waning or even one that effects the tides on earth, it is gigantic/ It is part of our whole evolution as living beings.