I'm not trying to make a case for a blanket pornography ban, but those who imply that consuming explicit media "harms no one" are starting to slowly find themselves on the losing side of the science.
Then instead of banning everything, why not educate people how to use porn sensibly? But then, we can't teach people how to drink booze sensibly, so we definitely should ban booze, right? And puritans won't tolerate sex education in schools, even though it is very clear that it would reduce teen pregnancies, inappropriate sex when the teen is not ready, STDs, etc. Who needs rationality anyway? The United States of Hysteria.