Almost everyone believes there are such things as “good” and “bad” foods. The notion is inculcated within us from a very young age, and right now various agencies are pushing to make the notion of food ethics formally taught in schools.
The problem with food ethicism is, of course, that it has no real definition. Some believe raw foods are the only “good” foods, some believe fats and sugars are “bad,” others believe carbs are “bad,” some believe high-calorie foods are “bad,” some believe only whole-wheat, fruits, and vegetables are “good.”
Food ethicism is pervasive and, like other ethical systems, defines moral worth or immorality based on how close one adheres to the ethical dictates, or how far one strays from those same dictates. In other words, if you eat “bad” foods, you are a bad person, or at the very least, morally bereft.
Putting aside food ethicism which corresponds to non-health-related values (like animal rights, for instance), most food ethicism judges “good” foods at how closely they help you achieve a socially acceptable weight. The best food, almost bar-none, is the green vegetable. Anti-calorie, anti-carbs, anti-fat, anti-sugar, anti-salt, and anti-processed ethicists are delighted by the green vegetable. Salads are the composition of the green vegetable, in which it prevails, sprinkled with non-green vegetables, and also possibly meat, carbs, and dairy (in heavy moderation).
The cult of the salad has reigned supreme since Day One of the War Against Obese People. When eating out with others, ordering a salad — the more green, the fewer condiment/meat/dairy/carbs is viewed almost universally as a sign of dietary “goodness.” Of course, one cannot live on salads alone. Which is the food ethicists’ great dilemma, across the board. Salads — in their purest form — are extremely low energy, and give you far less nutrition than you’d get popping a multivite.
Salads are, in their purest form, merely hunger-curbers. I.e., accessories to starvation.
So I’ll take liberty to define “eating junk food” as how far one has strayed from adherence to the Cult of the Salad.