I decided on trauma as an intern and never wavered. That's unusual, as many ortho residents are seduced by trauma early on, but most eventually decide to switch into something else. I never did, and knew I would not, but I also have that type of personality.
As for the other Ortho subspecialties:
-peds: hate the parents
-tumor: depressing, young people dying, made me want to kill myself
-hand: too finicky; hate loupes, nerves, etc; also the "stereotypical" subspecialty female orthopods go into, and I didn't want to do that
-joints: you said it, too repetitive
-sports: "voodoo" (outcomes and indications are questionable), hate scopes
-foot and ankle: feet are gross
-spine: chronic pain patients suck
If I hadn't gone into ortho, I would perhaps have become a vascular surgeon, as I had dallied in that field for a while in med school; but honestly, I don't think I could have survived in medicine if I hadn't matched ortho. I would likely leave and go into something completely different.