It is a simple answer. To really understand it, we have to look at different aspects of it. Let us start by looking at the basic definition of food.
Food is any substance consumed to provide nutritional support for an organism. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism’s cells to provide energy, maintain life, or stimulate growth.
So as you can see food is an unbearable factor on how to survive. Now this next part might seem a bit random but I will make sense out of it later. Many people have hobbies, to stay active, spend time with their friends or just doing something they find joy in, like sports or board games. Now to combine these two points, all of the hobbies people have are fun and may even be healthy but you usually do not need to do any of these necessarily. And this is where the food comes in, because combing something you need with something you love doing is not just more efficient it makes it that much more enjoyable, for example, eating. And this is why eating is such a great hobby it is not only fun it is necessary which, at least for me, makes it genius making eating a hobby.