I don't know how it is in other countries, but here in Brazil, racehorses don't live good lives. They are seen as machines and money makers, nothing but that. They are confined in small stalls, with no paddock time or social interaction with other horses. They are also submitted to a questionable procedure that strengthens their cannon bones so they don't crack from the pressure, as horses are very young when they start racing. In the barn I go to, we receive several ottb's and most arrive thin and traumatized, some with chronic problems due to racing. When racehorses are injured and no longer profitable they are frequently put down or discarded, sometimes ending up in slaughter houses or in the hands of bad owners. While racing, they are given the best money can buy, but that does not mean they are not submitted to cruelty. They are denied the chance of being horses and live stressful lives. I can't say that applies to other places, but my experience with the treatment of racehorses is awful.