I feel like everyone has a right to do whatever they want with their bodies as long as people are of age, it's consensual, it doesn't harm anyone else. That said, I think the industry is overflowing with thugs who manipulate/exploit women and also is often connected with organized crime. For every woman who gets into the industry and makes a successful life out of it I would assume there are many whose lives are ruined by it.
I also think porn is harmful to society in a variety of ways, many of which we're just beginning to wrap our heads around. It completely blows out the sensory receptors in the brain and makes everything else seem boring in comparison.