In all seriousness I do feel awesome most days, but I've also had physical therapy for my hip (powerlifting injury), shoulder (wrestling), other shoulder (powerlifting), both knees (various), surgery on both legs, and probably a few dings here and there that I'm forgetting.
I think it was Pavel Tsatsouline who told the story of walking into a room full of powerlifters and asking, by show of hands, how many people had a history of shoulder injuries. After 3/4 of the audience members raised their hands he quipped, "the rest of you can't raise your arms above your heads." Like many funny things, it's funny because it's true...
Long story short, I've learned a few things in my 30 years, and that is why I feel better today than I did at 22.
-If you bench, you must also overhead press. This will keep your shoulders balanced.
-Audit your program and make sure you are doing at least as many pulls as pushes. More pulls is perfectly ok.
-Do mobility every morning. My program is based equally on Pavel's book Superjoints and Bob Hoffman's Daily Dozen In particular stretching my hip flexors daily has greatly improved my quality of life.
-If it hurts stop doing it. I used to do VERY high volume pull-ups. My elbows were constantly sore. I cut back the volume and started just doing more weighted pull-ups. My elbows are no longer sore. Hmmm.