Nearly everyone thinks that a photograph is an accurate representation of reality, when it's really just how it works w/ photography. It's not reality, it's a picture. Photography is funny that way. Absolutely no one thinks that a sculpture/etching/painting is reality, they know it's just the artists interpretation, and it varies wildly between one artist to another.
Movies and TV are probably why this is so. They fake us into thinking that what we are seeing is real. Often I can get caught up in that when watching either one, and forget that it's not real. TV and movies are very, very powerful visual mediums that seem to go right past the filter in our minds that tells us this is play acting, not real. People are always underestimating that power, and will often say it's "just" a movie, but it effects us emotionally and psychologically as if it were really happening. Yet that idea persists w/ still photography, they think it shouldn't be gussied up too much because it takes away from the reality of the shot, when it never had any reality in the first place.