I think anyone that eats cheap burgers is barmy, the crap that goes into them worries me far more than any potential equine dna. But like Saggy, I like to know what I'm eating so that I can make the choice. I don't eat certain fish due to over-fishing, I don't eat battery chicken and I don't eat anything other that British meat. Now, as far as I am aware, we don't have horses in the food chain in this country, so the horse meat must have come from the continent with all of the welfare issues that go with it.
I also don't want to eat a species (dog or horse, anything else is fair game) that I have spent so much of my life caring for and getting so much enjoyment from. It seems a betrayal to me, like eating my Dad when he keels over.