They experience something that many of us can barely rememer, as we likely had it taken away very early on.
It's an experience of a warm blanket, tightly wrapped around them, that means they are loved and accepted, that their nature is good, their intentions are known, that the world makes sense and their direction in life is meaningful.
You are wrestling that blanket away from them. They react to the cold winds that touch their naked skin for the first time in their unexamined lives.