Forest, we're not arguing, this is just healthy debate.
You're absolutely right, that string walking CAN cause failure if done improperly. I've seen it happen. However, just as an asymmetrical yumi can be designed "out of norm" any selfbow can be designed to string walk. String walking doesn't inherently cause bow failure. It'd be the same if someone over drew the bow. That's just user error.
I'm going to call heresay on someone burning through super recurves by string walking, though. Alan Eagleton competed internationally in FITA barebow with an ILF recurve sporting Hex limbs (there was a video of him shooting in competition on Youtube). If that's true then someone doesn't know what they're doing.
As for accuracy being subjective, you are right- for the individual accuracy CAN be subjective. However, in any outdoor target archery class where string walking is actually allowed (there are many classes where it is not) SW dominates, because it is more accurate. Like I said, target guys would shoot a bow upside down if it was more consistent and accurate. So yes, where accuracy is the only thing that matters (and it's allowed) string walking is all people use. Target guys don't care how perfectly the arrow flies, how loud the bow is, or how obtrusive the set up can be in the woods; all they care about is accuracy.
Doesn't mean a darn thing to most of us. We have other considerations, too. That's why folks still bow hunt, rather than just use rifles. Or why folks use traditional bows, rather than just compounds. Or why folks shoot wooden bows instead of modern composites. The list goes on and on.
Hunters don't have someone telling us we have to shoot the target from 35 yards standing at a stake in the ground. We can just wait until it's 5 yards. Accuracy is incredibly important for hunting, but as hunters we have control of the situation; we CHOOSE when,where, and IF we even shoot, where as target shooters have to step to the line or stake and put it in the gold if they want to be "successful". That's why instinctive archery is still so popular. It's simple, easy to learn, and works great at the closer ranges we shoot.
Just because a sports car is faster doesn't mean it's better for my purposes than a pickup. Same with aiming styles. A Viper is faster than my Ram. String walking is more accurate than my gap-stinctive. I'll be sticking with the latter in both cases because they work for me, and I'd bet most folks make their own calls like that about their own situations, too.