Your point is well taken, but the public policy about holding mere possession of the material as a crime is that, since he got the material from someone, people who acquire the pedophilia encourage those who create the material to abuse children in the process and distribute it, either for money or for free.
Twitter
Myspace
Digg
Del.icio.us
Reddit
Slashdot
Furl
Yahoo
Technorati
Newsvine
Facebook