Then Indiana Jones selects a cup, more basic and much less adorned than the cup previously selected. He drinks and the knight comments “You chose wisely”.
Nutrition is a lot like that. It is a personal choice; choosing poorly will lead to gradual (or sometimes not so gradual) physical destruction but choosing wisely can provide you … well, maybe not eternal life but certainly a more healthy and vital life than you will have if you constantly make poor choices.
That doesn’t necessarily mean depriving yourself. Think basics and variety … lean meats, fresh fruits and vegetables, whole grains, seeds and nuts, legumes, and the right type and quantity of fat.