I don't know why, but it seems like the whole sport of backpacking took off in the 1960's and 70's when there was a strong "hippy" element involved. A kind of peace movement in the woods thing. It was during that time somethings fell out of favor, and common sense seems to be one them. I remember that comment about breaking off the nail file blade, and it was in a Colin Fletcher book. Nonsense.
If, and that's a big "IF" everything goes well, you may need ev er really need a large knife or a pistol. But
also a big "BUT" things do go wrong now and then. I read where some backpacking self styled experts say you don't need to have any wood processing tools, because your super duper stove will heat any food you need. Fine. But
there's that word, what happens when some little piece of metal gets fatigued and breaks, or some gasket gives out, and for some reason the stove fails to work? Now all of a sudden, you need to get a fire going or freeze. Oh wait, it's gonna be kind of hard to split some firewood with a SAK classic, or even a tinker. Especially if it's unexpectedly rained or had an unseasonal snow. Wet wood don't take a flame too well.
Now I admit I love the small to even tiny knives. But
that three letter word again, that's my choice for the most urban/suburban life I live. Even after moving here to Texas, I rarely carry any more knife than a peanut sized pocket knife. Going t the stores, running errands around town, whatever, it's all I need. But
Yeah that word again, if I and the wifey go hiking off in the woods, my daypack is with me, and aside from water and small first aid kit is my little machete. I'm out of shouting distance from the road, I don't really know what will happen until we get home again, so I want a real cutter on hand. This is country side thick with cedar and mesquite thickets, cactus and heavy brush. A machete is actually more needed here than back home in Maryland. Sometimes the trail is a little overgrown.
A good example of other natural dangers is the local wildlife. In addition to rattle snakes, coyotes that have been known to be rabid, mountain lions, are the wild hogs. The Texas hill country is full of them, and most of the time they run off. But sometimes they get a little territorial, especially if they have a nice oak tree that has dropped a lot acorns for a all you can eat hog experience. A few people have been chased up a tree, and a few actually injured by a hog. I like having my Glock on my hip, which is legal here in the Lone Star state.
Not having a crystal ball, we humans don't know what is going to happen at any one time. But
leave it to mother nature to bring up a harsh lesson in just how fragile we humans are when off away from our civilized surroundings. Purposefully setting out in nature with just a Vic classic or other small knife as your stand alone cutlery, is plain foolish.