While riding home last night, and again on the way in this morning, I was noticing that there just don't seem to be as many of the kids riding as there were a month ago. I'd say that at least 70% of the riders I saw last night and this morning were gray-haired (and bearded, but that's another thread).
The weather has changed. It's cooler and the rains have started. Overall commute ridership is maybe 25% of what it is in the summer, but the percentage of oldsters seems higher.
Has anyone else noticed this?