I write exclusively using computers. Pens and typewriters can fsck right off - I wrote my first half million words in my teens on a manual typewriter (had to trade it for a new one due to keys snapping from metal fatigue) so I am not a pen or typewriter fetishist.
Charles StrossI drink tea pretty much continuously at a rate of around 1 imperial pint/hour, which sort of enforces screen/keyboard breaks.
Charles Stross