Porn would mean there is explicit sexual content in this piece. Just because you are still primitive enough to call all nudity pornography does not mean the rest of us are. I believe that this piece does not show anything blatantly tasteless or obscene, just the natural state of a human body. The human body is beautiful.
Personally I feel the people on dA are pretty mature. Art is art and it shouldn't matter if there is nudity. Why is nudity offensive anyway? (I'm also slightly upset since I'm 17 but I can't see this artwork)
Such an exquisite primal display of emotion. Your conveyance of being gripped in the oppression of a nightmaren grasp is so visceral. What a powerful image. It conjures so many different thoughts and feelings