Dragonriders of Pern, by Anne McCaffrey. Currently doing my umpteenth read-through completely accidentally. I wanted to read one of the books then got sucked in. I’m nine books in and read several of them in one sitting, despite having read them all plenty of times.

And while I’m on the subject, I don’t think I’ve ever seen anyone taking about Pern online but I see mentions of Isaac Asimov every few weeks. They’re of a similar age and Pern is equally good as Isaac’s work, if not better. Grumble grumble…