[phy6]

There is such a thing as innocence, the time in your childhood when you can be carefree and not have to consider the terrors and vices of this world. It's natural to want to extend this gestation period, so that a child can meet serious subjects with a more mature mind. At what age would you have your child consider the implications of two girls one cup? Of being in a child militia? Of walking on broken glass?

The protection (along with education and discipline) is the responsibility of parents, not the government. Successful governments have set up constructs to attempt to aid like minded parents (for example the justice system and public schools).

While the porn filters could be construed as an extension of that aid (attempting to delay/soften the introduction to a controversial and mature topic), the ability to censor is at too great a risk for abuse by those with power or influence.