For you the wing may be just a piece of fibre and aluminum but actually it is the thing which makes the metal fly.
Do you know how birds use them, and now you see how the human use them to make their machines fly. Don’t compare our flight with birds, they born with it. They are evolved with it, we are used to it for only a century ago.
In every aspect of human progress, we learn from the nature.Nature is the best teacher for human since the beginning of time.