Detached retina or tendinitis with accompanying body pain. No thanks.
Add chronic neck pain issues to the pile. I have a permanent sore spot in my right shoulder that "wakes up" after shooting heavy recoil guns. I've had to teach myself not to flinch due to recoil. One time I picked up a shortened bolt action 12 ga shotgun for dirt cheap to see how it shot slugs, but it was too light. I literally threw it in the brush after I felt tingling down my right arm. I did retrieve it, but I promptly traded it off. The tingling lasted for days.