Considering that my activity on this blog has dramatically increased in the last few months (1 post every week instead of 1 post every 3 months) I just renewed blog and domain for 2 more years. Same for my old-unused Italian blog, officially closed 2 years ago.
But you know, old blogs are part of your digital history and shutting down a personal blog is like trashing a box filled with your personal photos and diaries. So you try to find some unused space (here: some money) to store that box (here: a domain/blog) until something new happens.