Yeah the trouble is you don't spend that much time opening a can or a man when your in the woods.
Peel a potato with one. Or use it to pry out a splinter.
The most usless device you can have is a knife that is to big for the job. I carry a three inch opinel "Picnic" knife and it ends up being far more usefull in the woods than my hunting knife. It is great for preparing small game. It is a folding knife that wieghs nothing.
Don't get me wrong I am not disparaging the KABAR for what it was made for. It is great for digging for roots and for making digging sticks. It is great for cutting because you can actually use a club or a rock to beat on the back of the blade to cut down a pretty sizable sapling.
When I go into the woods for a long stay I take my opinel and an old tomahawk I have had since I was 16 years old. I guess it would open up a can or a man if I had to but normally I don't have that many cans and so far I have not seen the need to open up a dude. But it combined with the little Opinel will do more than a Kabar.
I had a little Navy surplus knife that I can't remeber the name of. Pilots carried it in WWII. That was a great knife to.
Of course the KABAR is unbeatable for a heavy blade knife.