Be honest here and tell them what you actually love about working in restaurant.You may include some points in your answer like you love the The daily challenges,

The craziness,Looking out kitchen door and after knocking out 400 or 500 seeing the people happy and smiling. Having the wait staff come back to kitchen and saying "they loved it guys". Knowing that my crew and myself did our best and made it possible.If you have knowledge about the work environment and can highlight things that appeal to you professionally, outline these for the interviewer.