There is a plethora of research indicating that legalization of CP possession leads to reduced child sex abuse rates. Sometimes you need to read between the lines a bit, for example many of the studies say use of 3D computer generated child porn leads pedophiles to have a reduced risk of hands on offending. Of course they just phrase it this way because if they don't they will be seen as advocating child rape, in reality it makes no difference if the CP is computer generated or real. http://www.sciencedaily.com/releases/2010/11/101130111326.htm https://www.ncbi.nlm.nih.gov/pubmed/21116701