Landon, Kristin -- The Hidden Worlds
They're "hidden" because the runaway mind-controlling AIs are out there,
having eaten Earth and most of the galaxy (or something). Only these few
colonies remain. I didn't care much about or for this, and therefore
don't really remember why, but it was probably a mix of "absurdly rigid
and evil aristocracy of starship pilots" and "absurdly awful things
happen to all the characters for the whole book" and "absurd love
affair".
Books I have acquired recently
All the books I own