Balderdash. I know MANY normal people who carry as often as possible within the law. These “normal people” are attorneys, physicians, dentists, chiropractors, nurses, veterinarians, pharmacists, engineers of all sorts, insurance agents, real estate agents, bankers, stock traders, securities representatives, staffers and managers and executives in corporate America, mechanics, plumbers, electricians, restaurant and bar workers, chefs, professional pilots, truckers, delivery drivers, etc., etc. We see them regularly at shooting ranges and matches. (Most people have no idea they are eating in a restaurant or shopping in a store with an armed citizen–and hopefully will never find out.)
These folks have no intention of using their firearm. In fact, they hope and pray they will never have to use it (except for target practice). But they are WILLING to use it if necessary to defend themselves and others if faced with the prospect of “grave bodily harm” (a key consideration when deciding whether to shoot).
But yes, people should not carry a firearm unless they are WILLING to use it, and they should be adequately trained to know how to SAFELY carry and under what circumstances they can LEGALLY shoot.