Those who use firearms as a self-defense tool for their house, car or store should really consider one of these instead. It's a safe, less barbaric and cheaper way to defend yourself. Plus, it'll get you in less trouble with the law (for blasting someone with bullets) and less guilt. I think that those devices further push the point that guns are unnecessary outside of the police/FBI or military. And for the majority of the people who buy guns and claim they're for hunting - no you didn't.