Man, Pad is actually very similar to the Lunarians, he just wants nothingness. His life is just a slide show of dreams, where he just sees the people around him still suffering in their obsessions. Every time he woke up, he would have to listen to Rutile talk about how long he had slept and how many attempts it had been. How many times he had to wake up to that, and know that he won't see the next sunrise...
Phos actually changing and helping Pad actually see the next sunrise was like waking up from the nightmare.