If we fall into this trap, then it would become completely useless to have any kind of conversation about photography. We would let that small word, “subjectivism”, to take completely over any personal thinking, judgement or idea we might have on a photograph. When you say “it's art”, the truth is that you are taking away everyone else's chance to express any kind of thought about your photo. That's it. You are shutting everyone's mouth with a poor excuse just by not accepting that the picture is not as perfect as you were thinking. Everytime that you build that invisible shield to defend yourself and your work instead of embracing the criticism and try to improve your photography skills, you are literally wiping out every single rule that ever existed in photography.
That's a bit childish if you ask me, but I'm barely a photographer and for sure I'm not a psychologist, so that's just my personal opinion. Hey, I felt into that trap too in the past, so I'm no exception here.
To better explain what I'm saying, take a look at the photo with the flowers here: not that great, right? I know. I was in my early days of photography when I took this, and I was just getting the handle of the so-called “orton effect” and “dodge & burn” techniques. As you might notice, I tended to give slightly (yep, nothing serious) too much contrast and saturation. But hey, I was loving that atmosphere at the time. I then shared that image on a photography forum, and guess what? I received quite a few harsh critiques on the shot. And I was like “what? I can't believe they are not liking it”. After the initial wound to my personal ego, I started to think – a lot – about why they were saying all those bad things about the image. It took me time to understand, but I finally managed to get over my personal point of view and see what I was doing wrong. There were no excuses, that image wasn't great on the composition side and even worse on the post production one. Now, think for a moment if I hadn't listened to those guys: I would probably still be at that point, using tons of orton effect and creating halos everywhere with unrealistic colors. Looking back, those critiques were probably the things that helped me the most in my small photographic career. And I'm not referring just to this specific picture, I have many other examples like this one!