Um... no. (And this coming from a guy who doesn't care much for porn.)
Yep. I agree. Having known a few exotic dancers from being employed in the same establishments they worked in during a slow spell in the oil industry, they were there of their own volition, making better money in two weeks dancing while grandma took care of the kid, than they could have in a month at a 9 to 5 job.
Now that isn't outright porn, but any willing participant in those films is only being taken advantage of as much as they consent, or a crime is being committed.
If they don't consent, or aren't of age to do so, then I have a problem with it.
(and no, I don't watch porn)