== I think the main reason people put forth the “latent fetish” explanation is in order to argue that pornography is harmless.==

I think the main reason people blame their fetishes on porn is in order to avoid confronting their inner compulsions.

== Also, most of the versions of the fantasy I have violated conservation of energy, and therefore cannot be physically achieved. Why would I want to want something impossible? ==

I’m not sure, but it’s probably something you should unpack with a therapist. Blaming porn is the easy way out. Exploring why you are personally drawn to it is the hard work.