JZarr, I wonder if the statements you make don't hold as much water as they used to. With todays fast, high energy bows there is a tremendous amount of energy being 'loaded' into the arrows. Moreso than that of the olden days. Heavy slow arrows will always kill deer just like light fast arrows, but I wonder how much difference there is between the 'old slow bows' vs. todays equipment.
BTW, I'm 2 for 2 on a double lung passthrus while going thru a shoulder blade....I did not intentionally hit the bones, but we can't make a deer stand still forever! I only say that because of the 90%(not happening) you through out there.....I'm thinking that with today's high energy equipment the opposite might be true. I'm sure there will be others to offer a word or two!