A lot of people have learned to distrust the health care system. Go figure, but they don't want treatment of any kind forced on themselves or their children. Somehow, they got the notion that they are free adult Americans who can make their own choices about what's best for their families and what will be put into their children's bodies.
Thing is, these parents that think they know what’s best for their children are not trained medical professionals nor have even a slight knowledge about medicine.