So does feeding young children Big Macs. Obesity is FAR more damaging both physically and emotionally to young people yet for some reason theocons choose to ignore it. That kind of destroys the idea that they are really in this to "protect the children".
Gluttony is a vice as well. It hasn't stopped being one either. Just because people fail to heed succumbing to this particular vice doesn't make it any better.
Would you want your daughter in porn? If you're a man.. your wife or how about your mother?