I like futa because it's exotic. I rarely insert myself into my fantasies. I'm usually a detached, disembodied observer watching scenes play out. So from that perspective, I approach futa porn the same way I approach all my other porn and most of my fantasies.
Also: Tits. I like tits. So the more tits, the merrier.
I am not attracted to guys, regardless of their plumbing. A guy with a vagina still looks like a guy with his clothes on, and I'm not attracted to guys. Conversely, I am attracted to women, and that remains true whether they've got a dick or a vagina, because I can't see those bits when I am making the determination of whether or not I find a woman attractive. Legs, hair, eyes, lips, those are all the things I can see with their clothes on, and those are the things use to determine if I find a woman attractive.
Also: Tits.