I have a pen, pencil and highlighter in every bag (yes those I go out socially with); so I'm never caught short of finding a pen at any given moment. Perhaps my penchant for stationery or perhaps my overzealous and meticulous mind constantly at work or more to the truth - both.
My husband on the other hand always loses pens and is constantly getting a new pen out of my stationery cupboard; whereby we will invariably end up with 20 pens living in a bowl on our kitchen table. That is, until my OCD tendencies take over and with one clean swoop they're collected and returned to my stationery cupboard.
I do think our house is a pen magnet as we end up with such a cross section of collectibles from hotels, flights, work, gym and even cafes !