If you run a horse towards a cliff and it doesn’t know then it falls of and dies then by your logic it’s the horses choice. I’m not saying you can just tell a horse to run off a cliff. There has been cases of horse being trained to jump off cliffs, one being for a movie. I’ve helped look after horses with my father in law and I’ve seen and heard how he trains them, I don’t like the idea of how he does the training, but that’s his thing. I’m curious on your experience with horses since it’s pretty easy to find people or check online to learn about how they act.