If someone breaks into your house you can use reasonable force to protect yourself, your family and your possessions. If this results in a maimed scrote then so be it, as long as you can justify the force you used. Problem is that even tho the law would be on your side, as well as the attending police who'd prob pat you on the back, the scrotes know where you live, and usually have a load of morally deficient mates. Prevention and dissuasion are the best and safest methods to protect your family and home, and worth every penny you spend IMO.