dont you think in a war, some country who doesnt like the USA, or whoever is building a moonbase will experience death and destruction via missile?
screw the debris that gets released from the moon as a result, im sure that country could calclate to make most of it hit other countries.
other than that, the moon doesnt have deposits of Helium3, its scattered throughout the moon so scavenging would be the option, and even with robotic machines, its still too expensive
raises flame shield*