Adultery is pretty rife in Japan. Many of the married men don’t consider fuzoku (legalized prostitution) as cheating on one’s wife/girlfriend so why not get it for free?
Are these people kidding themselves? I work with fansub groups for current anime shows and their hentai’ sh*t is sicker than American porn. They even have bi-annual porn conventions for manga alone which attracts millions in the country. Conservative my ass..