Because not all bad guys are two-legged. Folk singer Taylor Michell was attacked and died from wounds inflicted by coyotes. This was a rather surprising headline for me to read as it’s very rare for coyotes to actively interact with humans in general. It’s incredibly rare that they attack human, but it does happen.
When the anti-gunners ask why we want to carry our guns in national parks point to stories like this. Mother nature doesn’t fuck around, yelling at a bear to stop isn’t going to make them stop. Humans in general are pretty frail and we’re not built for killing like most predatory animals and hence we need tools to go up against those types of critters. Punching and biting a bear isn’t going to accomplish shit, putting a few rounds of .454 casull into it very much may stop it.