Why do the bugs make their hosts kill people?
Would that not make people suspicious and also limit the amount of hosts they can infect?
Why doesn't the hivemind wait until a later stage when it can better evaluate threats before it starts killing?
The killing isn't the purpose, but a side-effect. The hosts are terrified and enraged. They're being pumped full of excess adrenaline and their higher thinking has been shut off. Killing may not be the purpose, but it's going to happen.












