Viewing porn is not naturally damaging to males or women. But I would offer some caveats. There are people who probably should not see porn, like those with poor body image or those who have been sexually victimized. Depending on your choice in viewing, you can develop unrealistic expectations about sex or what people like or how you'll be expected to "carry out." And seeing with someone requires real permission.
When none of these warnings are up, pornography can certainly have advantages. Counselors often suggest it to assist people end up being comfortable with a particular dream they or their partner may have. Porn can reboot a couple's sex life. It can give you concepts, or help you connect with what turns you on.
Pornography can reboot a couple's sex life. It can offer you ideas, or assist you contact what turns you on. Porn can provide you there at best, or disgust you at worst. It all depends upon what you choose to enjoy. With the availability of pornography online, it's possible to sample enough pornography quickly that you do not have to find yourself seeing wall-to-wall hard-core sex if it's plot driven erotica that attract you. You're just a victim of bad porn if you let yourself be.
And a word about sex or pornography addiction. I do not believe in it. Unlike a chemical substance, like opiates, you can't end up being "addicted" to sex or porn; you can end up being a compulsive viewer. In this case, it's not the pornography that's the problem; it's the compulsive character. If it weren't porn being used to act out one's compulsive nature, it might be food or some other habits.
As for whether it's damaging or beneficial to the performers, let's take females first. There are some who select to perform since they like sex a lot and they consider it a great method to earn a living. Then there are those who are drawn to porn as a method of acting out subconscious psychological problems-- trying to find daddy's love or punishment for being a bad lady. For numerous, it's most likely a little of each. Even women with the very best mental health will deal with some downsides love porn from this work. Our culture takes in pornography at record numbers, but the females who perform are still evaluated harshly.
I'm unsure the male performers go out entirely unharmed either. While they might not be judged as roughly as the women, eventually they're viewed as freaks who make their living with their anatomy. John Holmes's fate is the ultimate cautionary tale.
Maybe if we weren't still so consumed with regret and shame about sex, neither enjoying nor performing in these films would bring the weight it does. But then, possibly we wouldn't be so interested in them, either. If the fruit were not forbidden, would anyone care to take a bite?