I’ve been reading a lot…

I've been reading a lot of comfort fiction the last few days, because re-reading bits of books I've read to death is something I can fit in between bouts of child-vomiting. Also, it's comforting. I've been trying to figure out why Lois Bujold, Tamora Pierce, and Terry Pratchett's fiction is so damn satisfying. I have some theories, but would be curious what y'all think?