I think there are two main issues here:    1) The private vs public issue: as long as you do your stuff in private and it doesn't harm anybody else's what's the problem... is it ok to simply ban something? where to draw the line on what to ban and what not? who will draw that line?    2) The cause vs effect issue: is it really depravate behaviour caused by porn or is it porn just a mean to project that behaviour by some people? if we magically banish porn, puff!! it doesn't exist anymore.... does it make the depravates go away too? or are they simply going to project their obsessions through something else? what's next? ice cream? uhmm ice cream makes some depravate horny let's ban it!! :)