Yea erm, the Moon is a very difficult place to live, scientists and astrophysicists have theorised/found out.
- The actual sediment of the Moon is highly abrasive and literally cuts through Astronaut's suits.
- The Moon itself is still seismically active - caused through gravitational effects from Earth and radioactive decay.
- There is minimal atmosphere and also very little protection from the Earth's fields, which means that a larger amount of harmful radiation penetrates to the surface, as well as far more meteorites.
It is basically inhospitable, as it never was a planet but more the byproduct of an incredible collision between 2 bodies.