First, I acknowledge that it is at least possible for people on both sides of the legal debate find child abuse and child pornography abhorrent. For those against the various extant laws, some debate the penalties associated with the crime, while others debate the ethics of criminalizing indirect harm of minors. Of course, some on both sides of the debate are pedophiles, their public stances notwithstanding.
I view many things in terms of power and harm. Who has the power? Is that power being abused? Is someone being harmed? Is that harm justified? Is that harm self-inflicted? The last of those questions is irrelevant in this context, but the four remaining questions are very much at the heart of the matter. There are instances where, because of the power differential, true consent is very difficult, and in some cases, impossible. In lesser cases, true consent may be very difficult or unlikely. We saw this in the LeTorneau case and in other cases time and again.
An easy and valid justification for laws against child porn is that the person who possesses it, by the nature of that possession, is profiting from the criminal and harmful acts of themselves or others. I do not refer to those who discover such materials and make a reasonable effort to bring their concerns and the materials in question to law enforcement. This profit may or may not be financial in nature, but it is, nonetheless, profit in the form of some sick benefit to the consumer. As a result, I have absolutely no problem with those guilty serving time in prison. The problems I do have is when simple possession garners more prison time than an assault on a child; and when sentences are not tied to a mandatory treatment program. Also, I have a problem when the mandatory minimum sentence exceeds the maximum for some degrees of murder, as distinguished from manslaughter. I'm in favor of giving those guilty prison time and a lot of it, but the judges need at least some statutory discretion since every case is different. However, in particularly horrible or extreme cases, I support that discretion all the way to a sentence of the rest of a person's natural life. I don't know if this is libertarian or not, or if this topic even belongs in that particular spectrum. However, this is what I think. Take it as you will.
On a lighter note, enjoy the music.