Why do star maps show the ecliptic but not the lunar path?

The position of the ecliptic against the background of the stars changes very slowly. The reason for the change in position is the lunisolar precession.
The lunar path, on the other hand, moves fast enough against the background of the stars. The lunar nodes shift by 1.5 in one month and make a full revolution in 18 years and 7 months. It is simply impractical to depict the lunar path on a star map.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.