I don't think FAA has an obligation to represent all types of art. As a family friendly website it seems appropriate to me that sexual content in art on this site should be moderated and if you enjoy sharing explicited sexual material perhaps a more mature site would be more appropriate. Why influence the minds of the innocent just to highlight your own sense of artistic pleasure. Famous art with sexual content doesn't mean it should be presented on this platform. Art has infinite limits but society doesn't.