A virus is like any other organism, it wants to live, and reproduce. By nature, it does not want to kill the host as that is counterproductive to its most basic evolutionary instincts- it's own survival, and reproduction. That's why they naturally mutate into less lethal organisms.
A virus is like any other organism, it wants to live, and reproduce. By nature, it does not want to kill the host as that is counterproductive to its most basic evolutionary instincts- it's own survival, and reproduction. That's why they naturally mutate into less lethal organisms.