@Fiddle_wood said it all. I recently went through a period of a year where I didn’t learn anything new. During that year, there were even periods of a month where I didn’t touch my banjo at all. When I did pick it up, though, it was just to play and have fun.
There’s no rule that says you have to learn something new every time you play. With musicianship, if you’re not moving forward, you have to play to at least stay in the same place. Otherwise you’re moving backward. I just got in to playing again a few weeks ago, and I’ve spent quite a bit of time relearning things I used to know.
Really wish I had picked it up more often and played what I already knew.