I always chalked it up to everyone just growing up and lacking time. I've definitely seen it happen with people where, they used to write a lot, but don't anymore.
But on the other hand, looking at myself... I'm actually busier than most people I know, but I still do all the stuff I'm saying people don't have time for anymore... so, I don't know.
Maybe I just type faster.
Wow, fine, I'll send you tweets of pictures of my new D&D bookshelf. Also a deep analysis of the conifers in the Neverwinter Wood.