It’s the sexual fantasies which the majority of people do not have. Like getting aroused by seeing a woman’s feet or hands etc, which majority of the people wont find sexually arousing. But its unfair to call them sick to have those fantasies because “majority” does not mean “right”. And watching porn is not bad as long as one is not addicted to it. Every single entity in this world has a purpose and effect. So all those “moral police”, go and get a life.