My mom went to school and became a licensed farrier about ten years ago and after learning and seeing first hand what shoes can do to some horses we opted to go barefoot and have been ever since. If a horse doesnt grow much hoof the constant reapplication of shoes can really tear up the hoof wall. That was one of our horses problems. That and he would come up lame every few months or so. Started barefoot and he hasnt been lame since.
A horses foot is designed to flex and contrast with every step. This takes away some of the concusion to the rest of the horses leg and keeps a constant blood to the hoof. When you put a shoe on, it eliminates the hoofs ability to do that. I have one horse that had calcium building up in his joint and wouldnt stay sound. You could actually see the increased size in his joint. Quit shoes and started a natual hoofcare trimming schedule and he was actually able to be brought out of an early retirement. Lameness problems disappeared.
There isnt one solution for every horse out there but for me barefoot was definitely the answer. Some of the drawbacks are the experimental process of figuring out what boots and hoof protection work the best for your riding, and the putting on boots. Not the most fun thing to do in the winter when fingers are cold, or the boots are muddy to take off. But much cheaper in the long run.
Just my opinion
"Sorry don't get it done, Dude."
John T. Chance (Rio Bravo):