This horse--Blu Horse Matine--is magnificent. She is enjoying the entire exercise, dancing in time with the music and playing the whole time.
Not long after this, she was retired to become a brood mare--not unreasonable all things considered--and the world lost her. She died, in foal, after a paddock accident in which she broke her right front knee.
[UPDATE: WendyU sent me this link to a story explaining Blu Horse Matine's retirement was due to an injury that wouldn't heal, not just to make cute baby Blu's.]
So I ask you all, what is more important? Breeding the next champion or giving the existing horse a job they love?
There is no easy answer, and no right or wrong--certainly no black and white.
In the human species, some are meant to be brood mares and some are not. Are horses really so different?