Instead of the exhilaration and pride felt upon mastering developmental skills, kids learn hesitancy and fearfulness. I was having a mundane conversation with a teacher. A child was sitting close by, timidly watching us. The child immediately looks down and tries to be invisible. He learns it is fine to speak to someone with harshness and contempt.
Kids have no privacy.
Children learn to be uncomfortable with being alone. They have problems taking initiative without asking an authority figure what to do. There is no time for the child to discover what he or she loves. All time is taken up by what others deem to be useful or appropriate. One child I know of always had a messy desk and had trouble writing neatly.