Well one side is always facing us so yes that side gets hit a lot more, but the other side doesn't avoid the debris. The dark spot you see are craters. My main point is with absolutely no atmosphere and very low gravity (hence the lack of atmosphere) there is nothing to protect the gear and homes in a long term sense. You'd be rolling the dice is all I'm saying. mars has, albeit thin, atmosphere that would offer protection, but that his it's own environmental problems to worry about like dust storms.