When the state or federal government controls the education of all of our children, they have the dangerous and illegitimate monopoly to control and influence the thought process of our citizens.
Since when do we let the government decide what is or isn't good for us? What the hell does Congress know about nutrition, anyway?... If the government can use force whenever something is "in our best interest" then government should force everyone to wake up at 6am every morning for calisthenics in the front yard. Fast food establishments should be torn down and replaced with bars that serve carrot juice and alfalfa sprouts, since - "it's in your best interest." This paternalistic attitude that "the government knows best" and that you are merely a helpless child is insulting and reprehensible.
Libertarians love their children at least as much as the Democrats and the Republicans, probably more.