...except i've heard from a lot of men i've talked to that they prefer lesbian porn because they won't have to see a guy? :P
That said, it always did confuse me how people can dislike futanari so much if they use above logic. Instead of seeing a guy screw a girl you can have a girl with a dick screw a girl and all of a sudden you have that dick action you were looking for but without that weird thing dicks usually are attached to.