Well, let's follow that train of thought. If you need to repair an edge, that would probably be because you were abusing the blade, no? So, given that that sort of misuse might be a possibility....
why wouldn't we want to use a knife made of stronger, tougher steel again? Because I can tell you, if I was going to be in some sort of fantasy situation wherein my knife was required to function in some manner outside of its design parameters, my lesser knives are staying home, and I'm taking my Bussekin. Then, I can just sidestep the need for edge repair in the field altogether.