To be a Necron is to be unutterably and incurably insane until the end of time, or, more likely, to be nothing at all, a machine that, only now and then, remembers how to regret.
Madness string 96992
Give it about 30 to 40 years, which is about the length of time needed for the generation that experienced the hardships to either die or forget, and for a new generation to not know any better and be completely ignorant of recent history.