In my mind art is a subjectively biased interpretation of the artist’s subject. In many ways, the choice of subject is largely irrelevant; it’s the biased interpretation that makes things interesting and unique.
Artists show their own unique vision of a scene, which provokes a reaction from us, the viewer. Their ‘job’ if you like, is to make us see a scene and to execute it in a way that engages the viewer. The skill lies in being able to translate an idea to a finished product in the medium of the artist’s choice.