Looks to me like you have not looked at all the arguments with unbiased view. what about what people do to factor animals now days, pumping them with hormones to make them huge or or for chicken to lay as many eggs as possible. This is affecting people in turn in a negative way as well. If you were in nature and didn't seasoned your meat or cooked it. i highly doubt that you would want to eat. Heck it doesn't even look appetizing its flat out gross. just doesn't seem like a natural diet for our kind. Now there are nutrients like B12, Omega 3 fats EPA and DHA, those can be supplemented. i get mine from planet source algae which is where the fish gets it for it source. i am not doing for the animals i am doing it for health reasons first so i can eliminate the amount of BS that's been forced in our diets like the fuken hormones in milk n meat, antibiotic, which you have completely ignored. If a vegan diet is done properly you can be much more healthier than a meat eater or vegetarian.
I lived in the wild for a while. Meat was all I eating..and it was quite.. "blue"
oh and you think your veggies are "clean"?