Why does the poet say, “I would not intrude on him”? Why doesn’t he offer him money to buy another ball?

The poet says “I will not intrude on him” because he wants the boy to learn the meaning of loss on his own. He does not offer him money to buy another ball because according to him, money or another ball is worthless. The boy was trying to understand his first responsibility as he had lost something, which could not be brought back.