This is the book I wanted [Book|World War Z] to be: humans come together to fight an existential threat, but without the weird smuggness. (That said, there may be weird smuggness I am too close to to see.) It's relatively lightweight, but it does what it says on the tin: why does the robot intelligence want to destroy/rule humanity? I dunno, you watched Terminator, didn't you? Why does the robot intelligence do experiments on humans that give them edge they need to defeat the robot intelligence? I dunno, robots, man.