People choose whether to run or not, what choice do the horses have? Did they grow up with a burning ambition to be a racehorse? I very much doubt it. Any sport which exploits animals should be banned in my view. Anyway, back on point, it's great that her sad passing is helping to generate such fantastic acts of generosity.
The typical response from somebody who see's all the rubbish in the Newspapers the day after the Grand National.
Racehorses are bred by two racehorses therefore they are bred to race! They are not a normal nag you see standing in a field. They are an athlete that has been developed for a certain reason. If they were not bred for racing they would not exist!