While I'm not partcicularly interested in loli, banning it sets a dangerous precedent. There are victims in real child pornography, a child being taken advantage of. However, loli/shotacon is merely a representation of child pornography. You are, in effect, banning the idea of child pornography. When some strange man in Japan draws a doujin where a little girl gets raped, nobody is actually hurt. When someone else buys or downloads it for whatever reason, nobody is hurt. How can you justify destroying someone's that doesn't affect you in the least? Moreover, ideas should be protected under the principle of freedom of expression, one of the fundamental principles of Western democracy.