Some random musings
When you haven't written to people for a long time, you tend to feel that their wait should be rewarded by a substantial letter rather than just a short note. This just makes it harder to get the letter finished, which makes it even later, and so on. It's best just to break the ice with a short note after all, even if it's not really very interesting. And the same applies when you're recording your thoughts - which explains what you're currently reading.