I think that with respect to your first one, that people do care about their reputation, but some people make a calculation about how much they can get away with without material retribution. For instance, if a downvote from you would likely damage the rep score, then they might be more 'honourable', but if they reckon that they can walk in you without suffering too much in return, well then this is the system that we have...
Moon base, I'm still hoping for that...