Of what value is a duck? Who benefits from ducks? What do you duck contribute to life that makes it better for us?
Horses pull things. Or we ride them and use them for "vehiciles" of a sort.
Chickens lay eggs and they are also might tasty roasted baked braised poached
Skunks? The just stink up a place for a very long while because their stink is oily and lasts so long. They threaten us. Other than that? Zip zero zed nada. Enforcers.
Eagles soar.
Snakes slither. They can also kill because some are poisonous. Spiders too. Black Widow/Brown Recluse?
Fish are food. We eat it.
Bears hibernate and scare campers but the little ones are very cute. Teddy Bears are toys for kids. Smoky Bear reminds us to be careful with matches to prevent forest fires.
Elephant tusks are called ivory and are very precious to make stuff out of. The rest of the elephant is worthless. I mean ever hear of eating elephant steak or elephant burgers or wearing elephant skin shoes or jacket?
Donkeys/burros/jacka**es are beasts of burden like camels. They carry things too heavy for homo saps.
Maggots/roaches are there to disgust annoy. What value do they bring that is positive?
Lions roar and make a lot of noise and threaten but apart from that what good are they? How would their absence impact life?
And so on and so and so on. Bees sting but at least they try to make up for it by making honey. Wasps sting but what do you get out of it? Zero.