It probably doesn't have to happen but then the owners probably do not want to foot the high bills for surgeries and rehab either.I have a friend who has raced horses. He told me he thinks the horses are dying because the track is not being prepared properly. (Something about drainage)If that is true, that's F'd up. It makes sense. These horses are breaking their legs, so they end up shot. I still wonder if with technology now, that has to happen?