If you had read Gizmodo post on the 7th April this year, they mentioned how Garnet Hertz, a computation engineer created "Cockroach Controlled Mobile Robot", Then maybe you wouldn't said cockroach are absolutely useless.
Although Science and Religion cannot make this pest less scary, they have now developed a robot roach that can influence the real roach. So, you set a trap, and you release the robot, and soon you can see they all come for their doom. (Link)
My opinion: - (Ya, I have lots of opinion)
If Human had a "collective intelligent" like the roach, the world would be more easy to manage. When the Borg come for Humanity, I will volunteer to be assimilated.
Tags: Science Robot Cockroach