Playing Devils Advocate what happens when the least likely scenario occurs and the big nasty intruder in your house commits an atrocity against you and your family, according to the FBI there are 1.2 million burglaries a year in the US. Low as a percentage of the population but still a hell of a lot as a number. Granted not all are violent but all have the potential to turn violent. Knowing you could have legally owned a deterrent and use that deterrent, but decided on a moral level not to, would be a major headf**k