Well I only pull 60 pounds and think it is about perfect for myself. Nothing wrong with being overpowered as long you don't sacrifice accuracy, which I am sure some people do, but it is a choice they make.
As far as arrows go, I have a quiver of three, but I understand the need for more. I have seen fletchings just fall off arrows when they get exposed to the elements out there because the glue didn't like the environment and stuff like that. I also once watched Monster Bulls 6 or 7 and watched a certain Bone Collector personality come on up on his downed giant bull who was still alive. I don't exactly remember how many more arrows he put in the downed bull, but it was at least two more trying to finish it off more humanely.
We are all entitled to our own choices and opinions, that is what makes this country great!