Because the child needs the love and affection of the parents, some parents make use of this urge of the children for their own ends. They ask the child to do a certain thing that the mom would love him and ask him not to do certain things or otherwise mom would not love him. No doubt, a certain degree of control can be exercised on the child’s action in this manner. But continuing with this strategy for long can be detrimental.
The child will get into the habit of doing things only to please the parents and not for any benefit for him and the society at large. He starts deciding the reason for doing any work with the sole purpose of pleasing someone. He doesn’t get the realization that his actions have to be tuned to the welfare of the society and the humanity in general.
There are lots of parents who value personal benefit more than the good of the society. Their children become flunkies, flatterers, hypocrites and impostors because their purpose in life becomes pleasing others at any cost. Therefore, a clever and thoughtful mentor wouldn’t use the love and affection of the child for selfish ends.