Analyse the author's choice to tell story from Swami's point of view ?

Swami is just an interesting character to see life through. There is an innocent honesty and playful stubbornness about him that makes even the mundane entertaining. Swami is an honest boy of seven but, on the other hand, he also does not hesitate telling lies to his father. He loves his granny's stories. He is good at cricket and is nicknamed "Tate." He saw the revolution phase of Indian independence. Later in the course of the novel, he became bolder and socially prominent.