[jlgreco]

I agree, though I think a "no porn" rule is just as likely to backfire on a parent by driving a child away from religion. When religion is just that thing that forbids doing things that you don't want to do anyway (murder, steal, build a cow out of gold in your backyard, etc) it is easy to never bother putting any thought into it one way or the other. But when you tell a teenage boy that his biologically hardwired desires are evil... there is a good chance that kid is going to start wondering what exactly the purpose of that rule is and how relevant it is to his own life.

It could go either way I think, but it is a very polarising thing to impose on a young adult.