There's got to be some use for these idiots. There has to be a way to convince wave after wave of them to march into the killbots cannons, clogging them with wreckage or something.
Or some kind of dangerous disease where they'll be told to refuse vaccines, drink bleach/horse de-wormer smoothies and gather in large crowds to yell droplets into each others' face-holes. What are the odds of that ever happening though?