Their are quite a few actions and behaviors that are abhorrent to a civil society that we absolutely can not criminalize. You have already put forth reasons why that must be so I won't go into that. Your mistake is confusing the right of others to take part in uncivilized behavior with suppressing my choice to criticize those acts.
My post was criticizing your belief that increased access to a type of child porn would not be detrimental to children and society as a whole. I stated my reason for that and I believe it was sound. But my solution to the dilemma is not to enact more laws!
A civil society can not be simply defined as all those behaviors allowable within the boundary of a finite set of rules. A wise man by the name of Godel( sorry I don't know how to do those funny dot thingys above the "o") would tell you why if he were still alive.
Suffice it to say, combating child porn requires speaking out against it. Being outspoken against the vices that lead to it. Laws are often too blunt of a weapon. Causing lots of collateral damage. Like I've seen in many other matters the best weapon is my own personal vigilance.
If your intent is to criticize the acts, but you are not disagreeing with the SCOTUS decision, then you and I are in complete agreement. I sometimes find myself defending the indefensible, insofar as to repudiate the need for more laws and restrictions over the people as to what they "are allowed" to possess.
I am in agreement as to the moral decay of such actions.