It's always interesting to read these conversations. We have a pure miniature pinscher that has the attitude of a doberman.
We converted to strict PMR a couple of years ago, and the postive changes in the dog made us stay with PMR - and he seems to enjoy raw meats.
We started a food trial of cooked for a month on the recommendation of a holistic DVM - and to add some vegetables of our choice. She is totally cool with raw feeding, prefers it actually, but just wanted us to try something different. Started making soup out of meat, full lot of organs and a bit of veg - he loves turnip, carrot, celery etc. The soup ensures he gets a good dose of fluid and it's easy to add probiotics and such that he needs through these meals. He's made the choice it seems, he likes these soups.
On strict PMR, his stools were small, not much to them. Since we started in on cooked meals, they are much larger and thicker which tells me there's more in the meals that isn't being digested properly - I can only assume it's the veggies. I don't think the veg in his diet will hurt, if I did, then he wouldn't get them - don't see any benefit to adding veg. We feed generally one cooked and one raw meal per day - but sometimes he lets us know that he wants one or the other by turning up his nose.
I don't really care what people choose to feed their dog - it's their dog - however, I'll try to take the time to discuss with owners on the benefits of feeding better foods. Mind you, most times the response is "Oh, that sounds like a lot of work" or "that sounds expensive". Wow, but it's easier to throw kibble in a bowl.
Alot of good points are brought up here - but there is another I would like to add.
I don't care who says what - Grains/soy/corn are cheap, they are money makers. You can buy a ton of soy or corn for $150 - what do you think a ton of beef, chicken or pork would cost in comparison? It affects the dog food companies bottom line. There is a reason why pet owners are told that their pet has "evolved" to eat grain and other cheap proteins.
There is mention via different internet articles and books to dogs eating grain based diets over the last couple of thousand years. While this may be the case, how long do you think it would take for the dog's digestive system and teeth to evolve? Commercial dog kibble has only been available for under 100 years, I guarantee you the dog hasn't evolved in that time frame.