Letting the government secretly monitor suspicious individuals will only give them more power. They will become leaner and pacifists. Knowing that they can accuse anyone will relax their minds and they will rely only on what they see in monitors. If the person is guilty but regrets what they did and tries not to sin again, how will the government ever know?
It is better to have a lousy father than to be fatherless because you will have someone there to learn mistakes from and to give you motivation to do better. You’ll never have that question in your mind of what it would’ve been like to have a father.