On the very rare occasions I eat hotdogs, I only eat kosher hotdogs. Problem is, while I know the animals I'm eating are much healthier, and that the "lips and assholes" aren't used in kosher hotdogs, I have to get past the way the animals are slaughtered.
So, if you go Kosher, your chances as getting a healthy animal are much greater (so much as a bruise or scrape and the animal is rejected), the method of slaughter is cruel (slitting the throat while the animal is standing and conscious)
I grew up eating various European sausages, all Kosher. When I went to Germany, I was thrilled to be able to eat all these sausages in their native lands. Tried them, and they all tasted funny. Turns out it was because the original versions were all made with pork.