"Most tourists feel compelled to put the camera between themselves and whatever is remarkable that they encounter.  unsure of other responses, they take a picture.  this gives shape to experience: stop, take a photograph, and move on.  the method especially appeals to people handicapped by a ruthless work ethic - germans, japanese, and americans.  using a camera appeases the anxiety which the work-driven feel about not working when they are on vacation and supposed to be having fun.  they have something to do that is like a friendly imitation of work: they can take pictures."

Susan Sontag

"In Plato's Cave"