I'm one of those people who keeps stuff, records mostly, old phone accounts, bank statements, often well past their 'useful by date'. In recent years, assisted by The Handbrake's non-hoarding tendencies I've actually thrown stuff away. Except on the computer, where the statistical clutter doesn't look so obvious and I can get away with it.
I even keep records of the plane flights I've been on, although the list is incomplete in the late 1980s and early 90s when I was probably more than a bit preoccupied trying to
put up live with my ex. I've just updated the spreadsheet with my latest return trip to work. 1007 flights, no wonder I'm getting sick of it. I've come a very long way since I was a young lad cowering on the floor of a Cessna on my first joy-flight at an RAF air base in the early 1960s. I'm not frightened any more, just bored.
On the plus side I've got an indecently large pile of frequent flier points.