I don’t understand people who defend porn access. Porn is an addictive behavior with measurable effects on the brain similar to hard drugs. We regulate gambling, paid access to porn is worse. Furthermore it is fraught with misogyny and exploitation and objectification of women. Would you defend ISIS games on Steam promoting Taliban-style patriarchy? Porn is worse.

> Porn is an addictive behavior with measurable effects on the brain similar to hard drugs.

This comparison alone soundly defeats your argument. Prohibition of hard drugs has been a spectacular failure, directly resulting in increased rates of death, disease, and crime, and elevating drug cartels to enormous international influence.

The danger of porn as an addictive substance - which is very real as you point out - is a great argument against its prohibition.