I wish I could stop browsing /r/gonewild but I just can't seem to stop myself.
Why do you think you can't stop? Is it because you can just browse anonymously?
Definitely not. I think it's because looking at the pictures there is like having sex for free, though you get to see it.
While it is okay to look at amateur pornography as long as it is legal and non-exploitative, it isn't okay when you can't stop viewing it. If you find yourself not able to stop looking at pornography online, you have an addiction, and it is good to seek help. You should talk with a therapist to find ways of cutting down on your use of pornography.
Whatever, if porn was addictive, I'd be addicted to it.
Pornography has been shown to be addictive, and you say yourself that you can't seem to stop looking at it. If you don't want to see a therapist, try other strategies such as blocking the site on your phone or picking up a hobby to help preoccupy yourself so you don't have as much time to spend on it.