I don’t think it’s as clear cut as you suggest. Porn could be considered addictive for some people. Here are some personality traits of addiction:
http://www.erikbohlin.net/Handouts/personality_traits_of_addiction.htm
It’s possible to be addicted to virtually anything. As you wrote, young men (in general) are especially attracted to sex, and I think that would make them especially vulnerable to porn addiction. I know several Christians who are fighting what I would call porn addictions. It isn’t some mere thing they can easily give up or ignore.
In my opinion, porn is similar to drugs. It feeds the pleasure centers of the brain, and it takes a stronger dose to achieve the same degree of pleasure over time.
I respect liberty, and that means I must tolerate some things I don’t agree with so long as they aren’t harming me or mine. Regardless of whether one thinks porn should be regulated or not, one should be honest and admit it’s a social ill. It’s like pot in that regard. We may eventually decriminalize it, but let’s not kid ourselves and say pot is totally harmless. There may be some wiggle room concern its potential medical benefits, but it’s generally better if people aren’t potheads.
Since I’m not a libertarian, I think government policy should encourage responsibility even if it doesn’t make “bad” things illegal. It’s like laws supporting marriage (there’s no such thing as homosexual marriage, since two homosexuals cannot create a union in the same way as two heterosexuals, but I digress...). A libertarian would probably say government has no role in marriage at all, but that’s foolish. Government should encourage marriage, because it’s a socially good thing that helps build the civil society.
In other words, we all benefit when two people marry, stay married, and raise their children to adulthood. That’s something worth preserving. In the opposite way, porn is generally bad. Some people may have no issues with it, but porn is not harmless. Therefore, government reasonably should try to find ways to at least not encourage the use of porn.
“I don’t think it’s as clear cut as you suggest. Porn could be considered addictive for some people.” then you wrote, “porn is not harmless.”
Your link is irrelevant to me because you argue against claims I did not make.
But, hey, I took a Psych 101 class in college, too, and can divine that it makes you feel better to pretend that you “respect Liberty” as you argue against it.