This is my answer as well. It’s not at all because the world [building] is so compelling – there are better (well, crunchier) books out there for that – but the recurring characters and settings and themes, make this series a total comfort to go back to every few years. It’s like a warm blanket.
Discworld - I just love stories from Terry Pratchet and there are lots of them (40 books).
GNU Terry Pratchett
GNU Terry Pratchett
This is my answer as well. It’s not at all because the world [building] is so compelling – there are better (well, crunchier) books out there for that – but the recurring characters and settings and themes, make this series a total comfort to go back to every few years. It’s like a warm blanket.