Another contributing factor to the low mileage this year was a nagging upper back issue that caused numbness in my left thumb. Physical therapy didn't provide lasting relief but cycling less did, so I've transitioned to hiking/walking for aerobic exercise and daily stretching (pseudo-yoga) to work out the kinks in my back. Though the exercise is not the same and the increased flexibility is slow to materialize, I do feel better. Accordingly, my randonneuring future seems at a crossroads. A major change in my riding position to mitigate stress on the C7 disk (the source of my back/thumb issue, apparently) may be needed to keep riding, at least for long distances.
We'll see. I'm working on a 'bike fix' with the help of a fellow randonneur in Montana that may result in a different bike and a new riding position.