Read the wikipedia page on swedish hollywood wives. Apparently one of the wives spent a couple hours on a shooting range because they experienced a robbery. Instead of getting better locks and burglar alarms, she spends a couple of hours on a shooting range with what I can only hope was an air rifle(no sane manager of a shooting range in the UK would give an inexperienced housewife and her sons a gun on their first visit), because a basic grasp with weaponry will really help you defend yourself against what could be a hardened criminal in your house.