A rule one often hears about writing is to always start with something that will endear the reader to the main character. Something that sucks them in. In this short (and rather beautiful in its simplicity) tale, the first sentence was exactly that: "He was only twenty-six and very healthy and he was soon strong enough to be wheeled out into the garden."
Also, there's something delightfully true in the very fast, very strong relationship he forms with the locust, as humans all try to make connections with others, in his case to find someone to relate to, to understand his issue. He humanizes the locust, makes it a reflection of himself, and then the mirror is shattered. It is crushing in its truth.