One does not need a reason for one's interests/preferences; they are one's own and outside the realm of right/wrong. Sex and porn can get in the way of some people's lives, just as eating can. But if I like looking at pictures of nude men (I'm a woman), since I'm married, I'm not likely to hook up with that many men and though I could look at antique statues and other art work :-) I might just enjoy looking at Playgirl. What someone else enjoys, even my husband, does not have anything to do with me and what I enjoy.