I've never knowingly eaten horse meat, so if it turns out I have and I didn't taste the difference, then I honestly don't see why it would bother me to eat it on purpose.
I'm not sure, why there is such a taboo about it TBH, It's an animal like any other, and given the option of having that or nothing, I'm sure, we would all choose to eat it.
The biggest problem that has arisen by way of this scandal, is that people are being deceived. We are trusting these big corporations to do what they say they are doing, and it turns out, they aren't. That's what makes me angry, and more to the point, I find it difficult to believe anything else they say. How do we now know that all our other food is safe? How do we know out harmless pizza, doesn't have something far worse mixed into it?