Children start out loving their parents, but as they grow older and discover their parents are human, they become judgmental. And sometimes, when they mature, they forgive their parents, especially when they discover they are also human.
The end then of learning is to repair the ruins of our first parents by regaining to know God aright, and out of that knowledge to love him, to imitate him, to be like him, as we may the nearest by possessing our souls of true virtue, which being united to the heavenly grace of faith makes up the highest perfection.