The reason why the Moon in Cancer is so harmonious for everyone is that the Moon is Cancer’s ruling planet.
In astrology, the Moon represents your unconscious emotional response and what you need to feel loved and nurtured.
The Moon provides Cancerians with a strong gut feeling and intuition and makes them very nostalgic and connected to their family and body.
When the Moon is in Cancer, all of these themes flow well, make sense and cause little conflict.