Comparing hunting to survival, or bullets to arrows is as Frizz said, " comparing apples to oranges."
As to the ethics of head/neck shots, there is NOT ONE justifiable reason to take head/neck shots!
Meat loss? You' d loose more meat on a neck shot than a heart/lung shot!
Animal recovery? Lung shot animals seldom go beyond fifty yards, with a good blood trail to boot! What is the recovery rate for head/neck shots? 100% on " perfect" shots! What of the countless " less than perfect shots" ? Those " assumed" misses would probably bring the recovery rate down to 20% or less!
The fact that those using the .22' s for deer hunting are mostly the same ones advocating head/neck shots, is an admission that they are not using enough gun for the job!
And IF the .22' s are good enough for deer, then why not a head shot on elk or moose too? I' m sure they would go down just as cleanly as a deer would! On a " perfect" shot, that is!
There is just no way to justify head/neck shots and still be called a sportsman!