That’s a good question for you and me but if porn is legal and okay for adults why is it bad for kids?
Porn is legal for adults. But I would not agree that it is okay for adults. Alcohol is legal for adults but we have laws to prevent parents from giving their children alcohol.
That does not mean that I want people arrested for letting their children have a sip of wine from time to time. But I do not want it legal for parents to have keg parties for underage kids.
The same question with alcohol and cigarettes.