I've heard that as well, including from a couple men who served time for sex crimes. That is one of the huge problems we have on all these issues is that there's no good data -- no good way to tell when a news story is telling you about a typical case or something that makes the news because it is rare.

Are 30% of men downloading child porn and law enforcement just doesn't have the resources to go after them all? And successfully prohibits even committed journalists from finding out? I don't know. Maybe researchers at Google and similar places know or could find out, but maybe they're discouraged from conducting such investigations or revealing the results.