@Gand - Well, you can burn yourself out on anything. Also, "life happens". Sometimes life drives writing, sometimes it doesn't. Here's hoping you enjoy writing again...
@Starbeam - You've made me think of something here. I'll post part in a separate question, but also, are you one that writes beginning -> end? I've been jumping around, and it is interesting that the end pieces are not nearly as difficult as some of the set-up pieces.