First off I love my wife more than air. But I do fantasize (testosterone + imagination)
I fantasize more about pornstars/models because they don't seem real. I don't know if that make sense, but pornstars/models are on a screen and are like a sort of ultra-cartoon?? With all the make-up and lighting and angles, they just don't seem real to me, even armatures. And that feeling of de-attachment makes it feels less "inappropriate".
I work with and know some very beautiful young woman. But I know then as friends and treat then as such. I may be old-fashioned, but the woman I know, regardless of appearance, are riends and I respect them as so. I do like a scantly clad model/star to ogle, but not my friends.
I don't know why, and neither do any of us, why models/stars do what they do. But I do appreciate their work and effort, and their beauty. Sometimes a
model/star's personalty comes across in a shoot and that model is who I fantasize about.
I'm no better than anyone, but I do keep my "lust full" thought to "professionals" than my friends. But that's me. I could be totally wrong...