Wow, the view must be awesome from way up there on that pedestal!
So, when the conditions are just right (deer alert level, behavior, posture, distance, angle, wind, rest, position) I should give up a total lay-up head/top-of-neck shot that INSTANTLY kills the deer, because it doesn't meet YOUR definition of ethical?
Further, I should feel ashamed, and give up the sport permanently? Wanna buy my gear? Might set you back more than you're prepared for...
I'll argue that I respect the game enough that I strive for the most quick, most reliable kill that I can give that animal. Sometimes, that's a head/neck shot. Most of the time, it's a clean heart/lung shot. Occasionally, it's a high-shoulder shot, but those are my absolute last choice. Ruins too much meat. Only taken when the alternative is no meat (late in a bad season.)
I'd love to see it studied, but I'd wager a significant chunk of coin that an order of magnitude or two more deer are wounded, lost and left to suffer from poor marksmanship/buck fever shots in the gut, rump, or legs than by botched attempts at head shots each year.
What saddens me is that guys can't respect other hunters and others' abilities that might exceed their own, and trust that an ethical hunter who knows his abilities and limits can ethically and humanely pull off the shots you don't personally feel are for you.