It's not about you feeling hungry, or you needing entertainment, it's all about the Airline not having problematic passengers. By providing stodgy food, they a

It's not about you feeling hungry, or you needing entertainment, it's all about the Airline not having problematic passengers. By providing stodgy food, they are hoping that the passengers will get docile and sleep (especially on overnight flights) - also eating the food every x hours gives bored passengers something to do. A busy passenger is a passenger that won't annoy others. Likewise the entertainment options, it's all there to keep you in your seat and disengaged from the plane (and other people) around you. If the airlines could get away with doping everyone during the flight[1], they would. -- [1] The Passenger Spaceplane en-route to The Fhloston Paradise, Fifth Element.