Because "Art (photography in this case) is not "anything goes" Give this man a 10yr. supply of HDR & saturation.
Sorry bud...you lose.
Your small mind is showing...have you been to a major art gallery lately? Seen any great "art"?
Have you seen any real art that is less that "anything goes" that's worth a crap?
Art is exactly that, something that is rendered on paper or canvas that didn't actually exist in real life...because who the hell cares about real life?
The real reason Photoshop is so successful is because, well, reality sucks. Kevin took a shot and envisioned a totally different image than reality–that's the art part. If you can't get that, I think you need to go stand in the corner and think about it for a while (yes, that means you are in time out–shame on you).
Any putz can grab a shot of reality...only an artist can manipulate reality to serve their purpose. So, are you a putz? (hint, the indications are, you are...prove me wrong, go ahead, I dare ya :~)