I truly appreciate that archery is a personal thing, and that each chooses their weight. But at times it comes off that a light bow is a virtue or something. I guess I was heavily influenced by the writings of Howard Hill and writings and advice of Dan Quillian, who seemed to think that a heavy bow had some inherent advantages for hunting. Don't want to offend any lighter equipment archers, but a heavier bow may have some merrit.
1) Shoot a very heavy arrow with a respectable velocity (helping you pass-through animals, even if miss-hit, aka shoulder hit or similar). To me, this almost seems "responsible"??? By simple physics, a 85 lb bow slinging a 900+ grain arrow will be more deadly than a 45 lbs bow shooting much lighter weight arrow.
2) Help get a clean release. Again, accuracy would be beneficial for a clean shot at game.
3) Better transfer of skills from practice to hunting. The nature of hunting is that you actually shoot very few arrows (a handful of warmups, then likely just 1 shot, if any). If you train with a lower frequency of shots per session - maybe desirable, making each shot really count - and allow adequate rest periods between shots it would be doable to shoot a heavier bow, for most people. Verses shooting a lighter bow for repetitive arrow flinging (target shooting, 3D, etc.). I have been shooting 1 arrow, retrieve it, and then shoot it again. Seems like the practice, by nature of how you have to train and shoot a heavy bow, would be better to prepare you for hunting.
4) Observation of what other top hunters of trad archery do (or have done in past). Dan Q. pointed out that almost every notable trad shooter throughout history shot a fairly heavy bow (H. Hill, F. Bear, Art Laha, and the list goes on an on). Most of these guys shot bows of at least 65 lbs or more. Dan actually shot bows as heavy as 85+ lbs rather late in life . . . after suffering a heart attack!
5) Shooting a heavy bow just seems to be part of the "tradition" of traditional archery. Reading H. Hill's Hunting the Hard Way this seems as plain as the nose on my face.
I know this is my opinion. Just curious what the inherent advantage of the light bow are, besides less risk of injury. Example: Easier to stop mid-draw if a deer suddenly looks at you, able to draw and hold (say you draw before an animal comes out from behind brush), etc. I am certainly no expert, and I if I am wrong I would like to find out why.