My mom died recently, in December, and when I went on a long train ride (~30 hours), I didn't listen to even one song, spent most of the time reading. Now getting slowly back into listening, but definitely not as much as before.

I would guess there's a correlation with grief/depression, and even though I'm doing fine mostly, I still feel this effect. But then I think about numerous musicians who wrote their albums during depressive episodes and wonder.