The Saguaro
"The Saguaro seems to serve only two important functions- to entertain and cheer the desert traveller, and to furnish high places for the nests of woodpeckers. There is nothing about it with which to eat, drink, or make; and we are very glad of it. If each stem could be made to yield anything marketable at a profit of fifty cents, the species would soon be exterminated. Arizona and other states of cactus-land should make it punishable by $1,000 fine and ten years' imprisonment to discover anything of commercial value in Cereus giganteus. The human race is not yet so destitute of the necessities of life that we need destroy everything that delights the eye."

-- William T. Hornaday, 1914, Camp-fires on Desert and Lava