So I am the unlucky porn unicorn in that I am only attracted to people in a romantic scenario. Ladies, dudes, whatever---- I have to be actively romantically interested in them for me to want to do em. And for right now I am happily with a dude, so I don't know what that makes me. (Biromantic asexual? I dunno how that stuff works.) Either way, I just can't get into other ladies or other dudes, even in fappy porn context.
I LOVE watching other chicks' porn, however. For me, I notice the aesthetics--- I can still love the way a person looks and composes their scene, even without wanting to, you know, rub one out to them. After that are technical specifications. I am always looking to improve my own smut, so I have a deep appreciation for girls with a natural artistic bent.
Ultimately I guess I am neither. One can appreciate something sexual aesthetically without being aroused, and I guess that is where I fall.