There's no spiritual, philosophical, or quasi-religious component to Krav Maga, nor is there any aspect of it that is treated as a sport or competition. It's all about the practical matter of personal physical safety. Once you sense that a physical confrontation is unavoidable, you become the aggressor (i.e., strike first), you fight as if your life depended on it, and you don't stop until you're certain the confrontation is over (that is, until your attacker is incapacitated or has given you an opening to escape).
Given Krav Maga's very practical approach--boiled down to its essence, it's about street-fighting--it's been surprising to me that the 10 or so instructors I've met are all very down on fighting. By that I mean that they haven't been in a fight (at least since they began studying Krav), and they don't want to be in a fight.
I didn't really understand either of these things until recently. I went to a special seminar in San Antonio, though, where one of the instructors explained fight-avoidance as follows: "Only bad things can happen."
That's probably an overstatement, but I understand his point. I mean, think about the best case scenario: Someone forces you to fight, you knock them out with one blow without hurting yourself, and that is that.
If that were to occur, most likely it would ruin your evening. (You're not just going to return to light-hearted, beer-soaked banter with your friends after you've been forced to fight someone.) You'll probably get kicked out of whatever establishment you happen to be in, and you might not be allowed back. You might get arrested if someone calls the police. You might get sued by the guy you KO'd. His friends might be waiting for you outside once you leave. One of them might decide to stick a screwdriver in your eye. Etc.
Long story short, even the best case can turn out pretty badly. That's why the San Antonio instructor said, "You want to avoid a fight at all costs."
But then I started wondering, "Do all of these bad-ass instructors really walk away from fights?" So I asked, and the answer is, "Yes." And I thought, "That's crazy! They're going to back down even though they know they could beat the snot out of someone?" Again, the answer is, "Yes."
I had a hard time understanding this at first, but only because I was thinking about it from my non-bad-ass perspective. If you don't know how to fight and someone challenges you to a fight, a decision to walk away usually means (at least in part) that you were afraid. Not fighting, therefore, is an admission of fear...even cowardice. Men don't want to admit fear or physical cowardice, so they fight when they shouldn't--or they walk away under a cloud of shame and humiliation.
Because the tough guys know how to fight, have trained to fight, and have sparred a million times, they aren't afraid of taking a beating. Walking away from a fight, therefore, is not an admission of cowardice. So, that's what they do: walk away.