"Or loneliness. We can live indefinitely - we don't age past young adulthood, we just sort of accumulate patina. But the timing is always suspicious if we die not-of-violence. Somebody's favorite husband dies and his wife follows. Somebody completes their project of visiting every single country once, and then lasts about a week after. Somebody's clan gets wiped out in a war and she's the lone survivor and she sets up the pyre and then dies after she lights it up. Somebody finishes her epic poem, gets her niece to write it down, and doesn't wake up again after she goes to bed that night."