As they run home through the storm why wont the narrator wait for doodle scarlet ibis?

The narrator won't wait for Doodle in the storm because he feels frustrated and embarrassed by his brother's limitations. As they navigate the harsh weather, the narrator is more focused on his own feelings of shame and the urgency to get home than on Doodle's struggle to keep up. This moment illustrates the narrator's internal conflict between love and pride, ultimately leading to a tragic outcome.