Slow Time Between the Stars (The Far Reaches, #6)

by John Scalzi

Humans get bored in moments without stimulation or with stimulation without enough variety, stimulation that doesn’t please them. The absence of stimulation, even for a few moments, can send their brains into a panic and cause them to generate stimulation where there is none. This is, I imagine, why they fear death so much as they do. An eternity of nothing is an unceasing nightmare for such novelty-seeking creatures.