This dopamine effect explains why pornography tends to become more and more extreme over time: ordinary sexual images eventually lose their power, leading consumers to need images that break other taboos in other kinds of ways, in order to feel as good. Moreover, some men (and women) have a “dopamine hole” – their brains’ reward systems are less efficient – making them more likely to become addicted to more extreme porn more easily.
Sounds like what Christian anti-porn crusaders have been saying for years.
Pornography has become more explicit over the years. In the ‘50s and ‘60s, for example, Playboy magazine didn’t show full frontal nudity. Now they do and have for years.
I don’t read any of those magazines, but I understand that some such as Hustler, now show urination and sexual situations with naked men and women. Things have gone from various stages of undress to full sexual situations.
And with the internet, I’m sure it’s no holds barred on what you can find.
Sex involves a balance of libido and aggression. Highly aggressive men, such as those driven to seek power, are likely to have sexual preferences colored by aggression more than the average. It has always been thus. And it has been noted by psychological observers for many years that as time passes, sexuality becomes more dominated by aggression at the expense of libido.
What is important about porn is that it allows the free flow of aggression into the sexual drive in the absence of a love object evoking the balancing effects of attachment and love. It accelerates the objectification of the sexual image and essentially turns the woman into a fetish instead of a person.
I've noticed there are people that have the same reaction to roller coasters.