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A geek's life is quite practical: you really know how to handle computers and, furthermore, any kind of electronic device you get your hands on will sooner or later reveal its secrets to you. A small disadvantage might be the money you spent on your hobby, be it the latest model of graphical card (useful) or the parts for a Useless Machine
(self-explanatory I think).
The real problem lies elsewhere though: it's the non-geeks. The computer illiterates. Or, from a sysadmin's point of view: the users <insert thunderclap>