I've never broken a knife and have broken very few other tools and I've done a lot of mechanical repairs and wood working. I don't get the "bash your tools" thing at all. IMHO, knives are made for cutting, which really isn't a demanding task. The heaviest normal use for a trail knife would be making fuzz sticks and you can do that with any knife in your kitchen without breaking it. Knives are not pry bars, axes, pitons, etc.
I think the pseudo-military-mountain-man-survival stuff feeds a lot of "needs" in knife construction that just doesn't pan out in everyday use. A reasonably stiff blade and a handle that will allow a good grip and control of the blade is all that it needed. A mora or a pocket knife with a locking blade will do that. You will find a lot of outdoor knives made for hunting— designed for butchering large game and that is a completely different set of needs than hiking and camping. Quartering a bull elk or an apple call for different tools :)
In a survival situation you could still fulfill most of your needs with such a knife. If you want higher quality (and more weight), go for it, but recognize it for what it is.
One of the best principles that Ray Jardine identified is that many of our issues with selecting equipment revolve around fear of nature. I have issues with people going out with nothing more than a single-edge razor blade or a Swiss Army Classic, and I have to admit that wanting a bigger knife is centered on perceived fears rather than actual needs– opening a meal package, food prep and minor repairs.
I like a bigger compass and first aid kit for the same reasons as a "real" knife: I want to take reasonable precautions to take care of myself due to injury or loss of my shelter and other gear. That doesn't mean I need a 9", 2 pound chopper. A good 3.5" folding knife with a locking blade or a mora are very adequate for my needs, and assuaging my fears.
I have tried several small fixed blade knives and my falling out with them is the small handle. If you can't get a good grip on a knife, you can't use it to full potential. Even a knife with a 2" blade needs a good grip and in fact, needs every bit of control possible to maximize the use of the small blade. Designers shrink the handle in an attempt to make a smaller lighter tool overall and I think that is a mistake.
Wrap your hand around a ruler and see what you get. My hand is 3.5" wide doing that, so a knife with a handle that is about 3.75" is going to give good control. I'm not a fan of the moras with traditional wood barrel-shaped handles and no guard. If you are using a knife properly, this shouldn't be a problem, but a deep cut in your dominant hand two days out wouldn't be a lot of fun. Stuff happens when you are hungry, dehydrated and tired, so a little extra help is a good thing here. The Mora Craftline models have a small guard that makes for safer use.
If you are going to use a knife for extensive work, you need a handle that isn't going to make a mess of your hands. Many of the Swiss Army and other folders fail on this aspect too. If you can't use the knife for a half hour or so without tearing up your hands, its real usefulness as a survival tool is limited. I am thinking of situations where you might use a knife for constructing shelter and fire building. Many survival techniques and skills involve woodworking on the order of whittling— making figure-4 traps, fire bows, etc. A large knife is actually a hindrance for those tasks, but a good handle adds control and is kinder to the user.
The most extreme use I can think of is batoning wood for fire making and that should be a last-ditch use of a knife and the one most prone to breaking one. Even there, the wood shouldn't be any thicker than about half the blade length. I've been able to find dead branches for any small cook fires I wanted to make and never had the urge to break up bigger stuff. The smaller wood can be broken over your shin or thigh, between big rocks, or the fork of a tree to get to drier inner wood. The only times I have split wood for outdoor fires is when car camping and I used a small axe on cut firewood I brought with.
There is a lot of discussion about full tang knives. I agree that a full tang design is stronger, but I'll hazard to guess that most would break or otherwise damage the blade edge before breaking the tang with any design. I have tried to remove the molded handle from a mora style knife, and it simply isn't going to happen in the field. I had to mount the blade in a vise and literally cut and peel the handle material from the tang. The delicate part of a knife is the area near the blade where it is hardest and thinnest and can be chipped or cracked. All this business about breaking a knife tang in normal use is just shop talk. I do think full tang knives tend to look better and have good flowing lines, but the apple can't tell the difference.
BTW, I like Bark River's designs and materials very much. The Bravo Necker looks like a great small knife design and pretty much makes my point for handle designs– a 2.5" blade with a 3.75" handle and the handle design forms a self-guard. I will make a note that the tang design is not as strong as a true full tang model and I would expect the knife to break at the junction of the blade and the handle, but only where someone might try to pry with it, and that isn't what it is made for— I just can't imagine any cutting chores that could beak that knife.