Say a people who enjoyed playing an instrument stops playing, etc.
The best companies I worked allowed for a bit of game/social activity between work sessions.
Hopefully when my current large work project wraps up I’ll be able to take a breather.
I played this computer game "eliza" by zachtronics and it had this very interesting solitaire mini-game inside it. I liked it so much I bought the zachtronics solitaire collection. And wow, I would launch it "between things" for a moment and it could easily spin the clock forward an hour or more.
I had to delete it from my computer.
I think there are some things you have to just say no to and go through the pain of making yourself bored so something better will fill in.
I think wingspan may remain on my wishlist :)
But when life is good, it's hard to stop tinkering. Weekend-sized projects are the best. For me, it's an urge to create and see the core 20% come to life, not to maintain the boring parts over time.
Hormonal fluctuations is an interesting theory. I always thought it's just a need for variety -- sometimes consuming (i.e. developing taste, curating, exploring), sometimes creating, sometimes relaxing. For me the cycle is months at a time.