No, I own this class of weapon to hold back a crowd. I have vivid memories of civil unrest in this country and the only people able to hang onto their property at the time were those prepared to keep the mob back. Remember the Rodney King riots? Remember Watts before that? You may laugh at the very idea but even peace loving NYC wasn't that far away from looting after Hurricane Sandy blew through. If services had still been unavailable a week longer than they were, I think it would have been inevitable. Maybe you live somewhere where the risk is low but I live in hurricane alley. I'd rather have one of these and not need it than have the situation reversed.
Of course, need doesn't really play into the bottom line. It is my right and I'm exercising it. That's all I need for justification.