My main issue is that allowing possession of any CP (and for future reference, whenever I say child porn, I mean pedophilic porn, not teenagers sexting each other. Seven-year olds being raped is what I'm referring to) only allows for loopholes and exploitations of the law. An outright ban is the right course.
Also, all CP does have a victim. And viewing it does indeed further the propagation of it. To deny this is to deny the fundamentals of every supply-demand framework that exists.