I somehow feel they may have been used in experiments by the Cylons to create the humanlike Cylons as seen in Galactica 80! A bit like how the Terminators of the Arnold Schwarzenegger films were covered in real human skin from prisoners taken in raids or in battle! I couldn't see the human populations being kept alive especially after the Imperious Leader of Galactica 80 changed the hand of truce ideal as offered by the previous Leader to Adama by Baltar in Lost Planet of The Gods or is it the same Leader (with new voice) who was offended by the destruction of the city on Gammoray in Living Legend?

JB