Wait, do you really not understand why people have issues cooking healthy stuff for dinner? I don't think the average person can bake a loaf of bread every morning, or cook a meal for a family of four every day.
Personally I tend to batch cook for my wife and me, but my daughter's almost gonna start needing to eat solids soon, so we'll have to cook for her as well. My mom also brings us a lot of food but not every family is fortunate like that.
Meals are simple — a protein (usually meat, but sometimes beans or lentils), a carb (rice or pasta, usually rice) and veggies (frozen). Make a lot and freeze it. I can't imagine cooking real meals for 3 people every day with our work schedules.