I think eating horse would be just fine with me. Meat is meat...but just don't think about eating my dog! I think our culture in this country is why horse, (or dog), has not been relished. I have never had horses, (owned them), so I don't have any hangups about eating them. In other countries, just about everything that moves is eaten.
I would guess that certain breeds would have different qualities as far as the meat goes...just like cattle. Thinking about it some more, in this economic climate a lot of horses have been turned loose or abandoned by horse lovers that cannot afford to keep them. No one wants them. Hate to say it but horse roast might be a good outlet for this problem.
DeepinDirt...That Pooh-Pooh platter may have had house cat in it, too. When I lived in Hawaii, the Orientals ate all those kinds of critters. I did too, some I knew about, and some I didn't.