“Father, let me have the share of the estate that would come to me.”
The son doesn't want to depend on his father. And the father let him go. The father doesn't make any objections. He knows that the son has to see in his own experience what is right and what is wrong.
"So the father divided the property between them."
And now the son makes his own experience: ‘When he had spent it all, he began to feel the pinch. And he would willingly have filled his belly with the husks the pigs were eating but no one offered him anything. Then he came to his senses and said, 'I will leave this place and go to my father.' So he left the place and went back to his father."
The other son shows us the other way. The way of someone who takes what he has for granted. He doesn't do anything particularly wrong. He just lives being unaware of what he has. “Look, all these years I have slaved for you and never once disobeyed your orders, yet you never offered me so much as a kid for me to celebrate with my friends.” I am right but I don't recognise the treasures from you.
But the true protagonist of this story is the father. It is all about the sons, whatever their experience, that they recognise that they have a merciful father. ‘While he was still a long way off, his father saw him and was moved with pity. He ran to the boy, clasped him in his arms and kissed him tenderly.'