Very understandable, especially when life throws us knuckleballs.
I had an active blog with a small but enthusiastic readership for a few years, several years ago, and let it go dormant without notice when I felt I'd written all I had to say on the niche topic for which the blog was created. I always regarded it as a sort of magazine serial, not an indeterminate or lifetime commitment. When the issue played out, it seemed like the right time to stop writing about it.
Right now I'd rather spend my little free time riding than writing.