Well I don't have as much time to read this board as I would like and I don't post here very much, but after reading both pages I just wanted post my two cents.
As someone who has been riding races for 23 years all over the US and in other countries overseas. I feel the number one thing that a good race horse must have is "heart" and want to run! A great race horse will have that and as Judith calls it an "X" factor of some kind.
But even with those things the horse needs to have training and care to help the horse be the best it can be.
As for broken legs the main problem is "drugs", thats right drugs. So much pressure from the owners and media to win, the trainers are pumping the horse full of crap. Way too many times when a horse snaps it off, it's because he had problems before and started not running as well because he was hurting. Then the trainer or vet blocks and taps the bad leg so the horse no longer feels the pain and runs until he snaps it off or breaks down. It seems as we don't have very many horsemen any more as most of the super trainers are just chemists.
Don't get me wrong some drugs are needed to help horses, but that performance enhancing crap needs to be done away with, in the race horses and the sale horses. It really disturbs me that the sale barns don't test all the horse in their sale. I am no vet, but I do know that there is no need for a yearling or two year old in training to be given steriods or other performance enhancements.
Judith it's not just the TB industry that's screwed up. The QH guys hop & block too and you're right about the almighty buck, the difference being how much of it is being pumped into the industry and years ago no one paid $16,000,000 for a two year old in training. When that kind of money is involved people do funny things!