I fear meteorite impacts. Even a 2-ft rock could make a crater 50 feet across. The chance of hitting a human habitation are small - they would be a small targe

I fear meteorite impacts. Even a 2-ft rock could make a crater 50 feet across. The chance of hitting a human habitation are small - they would be a small target on the entire lunar landscape. But the chance of hitting a moon-spanning pipeline? Maybe larger. And the result may well be the extermination of human habitation on the moon. Because you'd have to repair it before you quit breathing. A deadline of sorts.