I've never been quite satisfied writing with a pen. The black lines of fresh ink are a pleasure but I invariably ruin nibs by dropping them during idle moments when my attention wanders. A biro is simply a make-do gesture toward satisfying the immediate need of making a note. Recently I've switched to using a pencil. It takes me back to primary school; I remember the leads being too hard, the paper too thin. Today I have the luxury of writing with an implement of my choosing so am trying out both a 2B and 3B Tombow MONO 100. It makes handwriting a joy.