My understanding is that their are very few major packinghouses/slaughterhouses in the U.S.
Kansas I think has one.
I dont like the idea of eating something that is handled by so many people, shipped across the world to me, and could have anything in it, from bugs to kangaroos.
What really got me thinking about what meat I ate was a show on T.V. the discovery channel:
They showed slaughterhouses where the meat is mixed up and you may be eating 10 different cows in one burger. A cow from australia, one from Brazil, and who knows what else is mixed in?
We now only eat beef from our friends cows who live in a 400 acre grass pasture and we know the cow from birth to death and exactly what is has eaten for it's whole life (grass, home grown corn, apples from the orchard, etc etc).
The only time I eat burgers is the occasional burger from a restaurant.