In the past sexual content in Fine Arts - to the people of that time- might have been arousing, but in today's context, I think we find it for the most part staid.
The club hanging on a museum wall no longer threatens - as the "porno" hanging in the next gallery no longer arouses.
No one has the urge to light up a cigarette after looking at a Lucian Freud painting.
I don't think you can make any assumptions as to how a work of art might impact... or arouse... others. I had a visitor to our studios slip me his business card and tell me that if he owned one of my paintings he'd never stop masturbating.
I think part the problem with the whole question of the "fine line between Art and Pornography" is the idea that fine Art cannot be intentionally arousing or erotic. This is due a great deal to the art critics and art historians who turned summersaults in attempting to downplay the erotic or sexual content in works of art that strike me as clearly erotic. I'm reminded of the theologians who worked themselves into convoluted knots to deny the erotic nature of Biblical
Song of Songs... even attempting to turn the Hebrew poem into an allegory of Christ and the Church.
Sex is a profound part of human experience. It strikes me as absurd to even suggest that such should not and would not play a major role in art... any more than themes such as mortality and death, birth and parenthood, love and hate, war, etc... Of course, the problem is the word "pornography". The word, as many do, comes from ancient Greek. It is a combination of
πόρνη or pórnē (prostitute) and
γράφειν or gráphein (to write, record, or illustrate) and basically meant a written description or illustration of prostitutes or prostitution. With time it took on a broader meaning: the portrayal of sexual subject matter for the purpose of sexual arousal. Today, we generally think of pornography or porno as the portrayal of sexual subject matter for the
exclusive purpose of sexual arousal.
But where does that place Picasso's 347 prints, the drawings of Rodin, Klimt, and Schiele, Shunga prints, Aubrey Beardsley, or the ancient Indian temple sculpture Khajuraho? A dictionary definition suggests the term
Erotica which includes works of art, including literature, photography, film, sculpture, painting, prints, drawings, illustrations, etc... that deal substantively with stimulating or sexually arousing descriptions, such as the portrayal of the human anatomy and sexuality which yet retain high-art aspirations... or rise above the merely arousing in spite of the intentions... differentiating such work from commercial pornography. IMO, there is no doubt that Goya's
Naked Maja, Velazquez'
Rokeby Venus, Shunga prints, many of Cranach's nudes, many drawings by Rodin, Klimt, and Schiele... even Michelangelo's
Ignudi on the Sistine Ceiling qualify as Erotica... but not Pornography.
Simply dropping the letter "a" we have the
Erotic which is again something different altogether. The Erotic is that which an individual finds arousing... but it need not include a depiction or portrayal of sexual subject matter or have been created with the purpose or intention of sexual arousal. Someone may find a certain perfume or other scent arousing. Some may find certain foods arousing. Still again, some might might certain fabrics, works of music, or the sound of a voice arousing and thus erotic. The Victorians notoriously were supposedly aroused by the legs on fine furniture and thus added the drapery skirts to cover these from their view.
Member E.J.H.'s post above states it far more concisely than I have:
A cow is a mammal, but not all mammals are cows.
Porn is sexually arousing, but that does not make everything that is sexually arousing, porn.