The physical/mental stress and work needed to move at 60+ is ... very stressful. You spend weeks going through "stuff" deciding what to take and what to dump (and how). Then you move the stuff, or get movers (we had both) and then unpack and figure where all that stuff goes now in what typically is less space. Then you wonder why you kept THAT, and left behind more important stuff.
I somehow left behind my flight bag with some fairly expensive stuff in it, my log book, license, two head sets, I don't really need it, but ... I did get my license replaced, that was fairly easy to do. The old one was just paper, the new one looks like a DL without a photo.
I had all my HS trophies in a box in the basement, went to garbage. No big deal that. They seemed important at the time.
My wife about killed herself unpacking.