I knew a gal online who fed her animals a raw diet, and she ate the same herself. She didn't eat chicken, due to the salmonella concern, but she kept her beef raw/rare if and when she ate it.
In her case, some allergies cleared up when she changed to the diet, she lost a great deal of weight (she'd been quite overweight), and became very healthy. So I can certainly see the merits of going all-natural, primarily raw.
There are obviously serious cautions against this type of diet, and education and care are paramount.