I don't know much about the Saguaro community but it's probably so that they can protect themselves or perhaps because of the sort of small animals that are there? So that they can feed themselves.
Don't say you don't have enough time. You have exactly the same number of hours per day that were given to Helen Keller, Pasteur, Michaelangelo, Mother Teresa, Leonardo da Vinci, Thomas Jefferson, and Albert Einstein. — H. Jackson Brown
