A lot of magazines ,TV and internet inform that fast-food is unhealthy for our health. And it has a lot of fat and salt. But fast food is all good tasting, except that it is not nutritionally balanced. many people like to eat the fast-food. And we can eat quickly and save the time to make the cook. So people think that it is very convenient. Fast-food company try to reduce the calory so they make diet hamburger and serve the diet coke. Most people love the fast-food as witness fast-food restaurants are opening over the world.
People have to control to have the fast-food. So they can enjoy having the hamburger and keep fit. It is difficult to maintain neutraility. It depends on your select.