Art is expression.  Either of pain or pleasure, or just some kind of emotion.  If it touches you, then it is art.  I do a lot of my own textures and models for my renders to tell the stories I have inside of me.  I have painted, sculpted and drawn in colored pencil and always strived for realism, for crossing the tangible bounds into the intangible.

If you see the intent behind the artist's render, it's art.

 If it's just throwing a naked woman on top of a bunch of random props arranged by someone else, it's a brain-fart.

Art is a form of non-verbal communications.

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!