Racing is, primarily, an industry. The TB was bred, and still is bred, to be a spped machine. I enjoy racing, and I think that it gets way too much bad press. You must remember that if half a ton of flesh, blood, bone, and muscle, does not want to do anything, then no amount of cajoling, or mistreatment will make it change it's mind.
Yes racehorses do sometimes get injured, and sadly some of them pay the ultimate penalty for the enjoyment of man, but equally, there are some owners out there who care more for the welfare of the horse than how much it will win them or how much it will go for at the sales.
please, we all love our horses, and care deeply for them, but we cannot afford to get all worried about an industry that has been around since before Roman times, and will, most likely, outlive us.