Can we please dispel the myth that racehorses are well cared for. They are not. They live a completely unnatural life, are confined in stables, fed an unnatural diet of high energy feeds which do not suit their digestive system, experience high stress situations, travelling constantly, and so on. Racing itself harnesses their fear response - they run on adrenaline in a herd of unfamiliar horses, at speeds they would only reach in their natural state when fleeing from danger. It is brutal, ugly, and inhumane. And that’s without even mentioning the number that are killed before entering training, or because they’re not good enough, or because of injuries in training or on the racetrack.
Flatracing is no better even if fewer are killed on the track. They are broken to ride at 18 months so they can race at 2, when their skeletons are not fully formed until 6 or 7. Mentally as well, they are babies. I have known a few ex racehorses who were completely broken. I suspect the rate of attrition is just as high if not higher than NH horses.
Humans have excelled over centuries at getting horses to do things they would rather not do. We have succeeded because they are the most willing animals - that’s why they have been taken down mines, ridden into war, pulled heavy loads, performed pointless tricks and generally done all sorts of things that mean nothing to them. They have always been our slaves and it’s time we treated them better.