NO. No advantages.

I agree there are NO advantages to porn. PORN destroys lives, marriages, families. Its a disease that affects every part of human nature. There is NOTHING good about porn.

I add to this. There is no advantage to Porn Addiction, not to the user, not to the spouses/significant others, not to society.

A) reducing the birth rate - NOPE plenty of porn addicts in marriages and sexual relationships.
B) reducing sexual assaults - Are you serious? Porn addiction is a form of sex addiction that can escalate. Men can get into more violent type of porn and in some cases want to act this out in real life. Sociopaths and psychopaths are still in society doing their dirty deeds, but Porn addicts are not immune from being the aggressor in sexual assault.
C) reducing the spread of sexually transmitted disease - this is assuming that the porn addict is not sexually active!! And also as I said the addiction can escalate to other form of sexual addiction which includes acting out with prostitutes, anonymous sex, etc.

Your list of the affects of porn addiction is also kind of short to be honest. There are many more adverse affects that can be listed.

I read the article in psychology today, and am sad to know that people who are trying to help are so unskilled, and then get published like this.

The differences they are trying to base their arguement on are void of any discussion about the reasons addictions happen. Addiction is an immature adult using a destructive behavior to cope with unresolved pain.

I asked my wife if she would have preferred me be an alcoholic than a sex addict. She said it didn't matter.

There is only one reason to rationalize that porn addiction is not sex addiction, to minimize the porn addiction as more acceptable or less dangerous.

Unilke addictive substance abuse, nobody dies from porn addiction. Unlike serial sex, porn transmits no STDs.

I recall reading an old article saying that the advantage of child porn was that the abuser would mastubate rather than seek out children. I disagree.

It's a hard subject to study properly. Most people won't answer questions honestly on the topic. I wanted to re-read the referenced article but it is no longer available to me on the website. Search for it, I found these articles which report on a study that concludes that porn does not become an addiction in the way that cocaine/alcohol do,

https://www.psychologytoday.com/au/blog/the-sexual-continuum/201307/new-brain-study-questions-existence-sexual-addiction

https://www.psychologytoday.com/au/blog/women-who-stray/201307/your-brain-porn-its-not-addictive

original post:
http://www.psychologytoday.com/blog/cupids-poisoned-arrow/201111/porn-addiction-is-not-sex-addiction-and-why-it-matters

Here is another article about the differences and similarities between porn addiction and sex addiction.

https://www.webmd.com/connect-to-care/addiction-treatment-recovery/are-sex-addiction-and-porn-addiction-the-same-thing

Long ago, I realized that pixels weren't people. If they were, I couldn't look at porn. According to the article

"With sex addiction there's a more significant interpersonal component. The person with the addiction needs to be having sex with another person in order to satisfy their need — porn alone wouldn't cut it. For this reason, people with sex addiction are often extroverted and eager to mingle. People who are addicted to pornography, on the other hand, are more likely to be introverted and happy to stay at home."

I don't need the porn for itself. I need the orgasm, and for me, porn is the most direct and effective means to that end.