why do you think the author chose to only share saidus funeral memory with us? and what purpose does it serve in the book?

Despite their acceptance by villagers and refugees, Beah and his companions suffer the loss of one of their own - the coma-stricken Saidu. Their place in the village is confirmed by the sorrowful ceremony of Saidu's funeral, a rite of passage heralding both belonging and loss. Despite their kindness in the wake of tragedy, Beah knows that he and his friends cannot find peace among the villagers. They have changed too drastically on the inside; they have grown up too quickly into men who recognize that survival is more important than familial connections. Unfortunately for the boys, their losses to date have hardened them into people who exist only to keep existing, with no higher purpose in mind.