Our girls have always been barefoot. They all have lovely feet in hot, cold, wet or dry weather. We have ridden them in all sort of terrain with no problems. There has only been one time I felt they needed shoes and that was going up the side of a mountain covered in nasty big rocks. We have since gotten hoof boots for those rare occasions. Be careful if you do decide to go barefoot. The basic trim a lot of farriers do is not a barefoot trim. Check the webside Jazzyrider posted for more info.
"Until one has loved an animal, part of one's soul remains unawakened..."
- Anatole France