You make a very bold claim that vegan diets cause malnutrition. You probably don't mean to say vegan diets inherently do this -- simply that many people who try

You make a very bold claim that vegan diets cause malnutrition. You probably don't mean to say vegan diets inherently do this -- simply that many people who try don't know how to balance their diet, right? Let's assume for the sake of argument that malnutrition cuts a human life short by 1 year. Does this now justify torturing hundreds of animals for hundreds of years? I'm trying to nudge people to think of any argument that results in "we can now torture animals". At this current time, we don't need to abuse animals to eat animals, we only do it because it's cheaper. I doubt many people in company of family and friends could say 'saving $1' justifies torturing animals.