Ok, good point.
Although I have to wonder if Buddhist vegetarians consider their diets as unnatural, or less natural, than that of omnivores.
At any rate, the acceptance of driving over walking or riding a horse is somewhat similar. If technology allows, we can choose to adapt our behavior. I do think a lot more people would be vegetarians if the processing of their meat weren't so abstracted. Personally, I have a harder time understanding someone that eats meat but doesn't want to consider the source than someone that is comfortable with the sourcing and isn't deterred.