I'm not real excited about taking this thread off the rails, but I'm going to throw in on the veggie issue, being a semi-lapsed veggie myself.
I am (was?) an "ethical" vegetarian, and I think it is both the life the animal lives and the manner of its demise that matter. I don't eat meat that I don't raise and kill myself (or just kill, if it's wild) or wasn't raised and killed by trusted individuals, which means I essentially don't eat meat other than a bit of fish once in a while.
I don't buy the argument that the whole world would magically stop eating meat and we would be left with massive herds of cattle in our care. What would be far more likely is a gradual shift away from meat, reducing demand and thus supply, eventually reaching a minimum where a few meat animals are kept to satisfy the small demand that would always remain. The most likely prognosis is that people will always eat meat for dietary, societal and religious reasons and not much will sway that. I'm of the mind that I do what I need to do to feel good about my life, and everybody else can mind their own business.
As for road kill, again, I think that there is plenty of opportunity for good food there if one is discriminating in what one takes. I think that Drennan's point of view ("If you haven't seen or heard it being killed...") Is flawed; I think that everyone really should experience the demise and slaughter of an animal for the plate so that they appreciate what they are getting. If you can't handle it, I don't think you deserve to be eating it, IMHO.