Airhead, my apologies, I was just winding you up.  It was cruel and unnecessary.  Oh wait, you think of it as a work of art.  Well it DOES have some entertainment value.  
 
 I don't think you have issue with with the masturbation itself.  I think you have problems with the porn as you consider it exploitive. 
ex·ploit   Pronunciation Key  (ksploit, k-sploit)
n. 
An act or deed, especially a brilliant or heroic one. See Synonyms at feat1.
tr.v. ex·ploit·ed, ex·ploit·ing, ex·ploits (k-sploit, ksploit)
1.To employ to the greatest possible advantage: exploit one's talents. 
2. To make use of selfishly or unethically: a country that exploited peasant labor. See Synonyms at manipulate. 
3. To advertise; promote. 
Now I think we are looking at definition number 2.
To which I ask.  Do you think it is possible for pornography to be made which was not made selfishly or unethically?