Glad (kinda) to see I'm not alone, although only 52 both my rotator cuff are torn and on my right shoulder (shooting one) it's been separated for 9 years after a mountain biking accident and now the ball is falling out of the socket.
I still regularly shoot my 280 AI and .270 without much of pain and I limit my practice with the 8 lbs. 300 H&H, but I must say my newly built 8 lbs. 6.5CM has been a joy. I shot 75 rounds last weekend and feel no ill affects at all.
Someday I'll man up and have the operation(s) but for a self employee guy who likes to hunt there just isn't a good time.
