Vermins, or worms, are living creatures. However, these creatures take shelter inside the body of others, stealing their nutrients, making them sick. This creature, although alive, does not create, does not feel, does not scream, does not see, only remains in the darkness inside the body of another animal, not to kill it, but to suck its life from it slowly and progressively. There is no reason to believe that there is any purpose for these animals, so, by syllogism, there is no reason to see purpose inherent to life itself — it is merely something that happened, just like the oceans, like rocks, like reefs.