I have to agree with hawkeye on this one. The lung shot is highest percentage kill shot to take on a deer. There is a bigger vital area to aim for. Plus the deer will die if hit in the lungs, even if it is hit high in the lungs or one lung for that matter. I, nor any of the guys I hunt with, have lost a deer that has been shot in the lungs. Not only that, but it is a rare occassion the deer will run farther than 60 yards. We have recovered deer hit in one lung within a hundred yards of where they were shot. I believe the 3x3 Blacktail deer you shot was not shot in the lungs. You probably shot him back a little ways and hit him in the liver or guts. A deer can not go far if it is hit in the lungs, it's impossible.
If you don't aim for a lung shot, then where do you plan on shooting a deer? The heart...a fatal shot but much harder to do every single time. Also the possibility of shooting the deer in the brisket and a long delay before tracking. The deer may even survive that shot. Not to mention missing the deer totally. The spine is definitely a fatal shot but still harder than the other two bullet placements. The other problem with trying a spine shot is missing the spine altogether and hitting the deer in "no mans land" between the spine and the lungs. Now you'll lose that deer 75% of the time. The head and neck shots are lethal but still again difficult to do 100% of the time and really shouldn't be tried by the majority of hunters.
I'm not trying to be harsh at all. I just disagree with that statement vehemently.