I also have fire extinguishers in my vehicles, in my home, and in my business. In my 64 years of life I have never had to use one to put out a fire other than in training. I have used a firearm and though I did not use one for self defense I have restrained and removed a knife from someone during a church service once. I don't train and carry hoping to use them. I train and carry because there are others who have bad intentions out there.