HT2735 - Losing Faith in Photographic Truth

With increasing frequency, I find myself looking at a photograph and immediately questioning its veracity. For example, every morning when I start up my computer I'm greeted with a lovely landscape thanks to the programmers at Microsoft. Almost without exception, they look fake, with punched up colors, unrealistic sky and water reflections, and a kind of computer generated pristineness that I find difficult to believe. These images are, however, very pretty. Should I care that they are not truthful?