The Hitchhiker's Guide To The Galaxy Entry:
Upon completion of their education, the students receive a shiny piece of paper that tells their future employer that they survived school and they need a job. Therefore, the child has grown into an adult and decides to be proud of homework for he thinks that working on it helped him earn that shiny piece of paper. (Other alien races have determined that homework had nothing to do with gaining a love for learning and remembering. Sadly, they're too polite to spoil the Earthling's shallow realization on homework.) The Earthling decides to celebrate by forcing people younger than himself to do homework, therefore making the cycle go on and on until the Earth was blown up by the Voogons. Fortunately, a similar pratice of homework has caused bloody student rebellions on other planets, so the practice has been replaced with the child receiving a programmable memory implant attached to their hand called computerization.