Child porn should not be illegal to possess or view. If you think it should be, then you are pro censorship.
it's a two headed sword.
in order to posses/view, it must be made somehow, which creates a market
but some believe that if a pedo doesn't get his CP fix, he/she will resort to more desperate measures (kidnapping followed by shit i don't want to think about)
so it comes down to the lesser of the two evils in my book