Her Vanity. And her lack of any proper social skills. And her inability to actually connect on any real level to any of the other Gods or Goddesses. Largely because of her disproprtionate sense of her own importance.
Also she was capricious, prone to acts of incredibly gratuitous cruelty, paranoid, insecure, and greedy. If they'd had Cellphones there, every night when Zeus got home, he'd have hung his balls up at the door, and Hera would have gone through his call log, and questioned him at length about every call. Zeus would get so pissed off, he'd fling a few thunderbolts, and change into an animal, go to Earth, and have sex with a human woman. Just to get away from crazy wife/sister monster.
Also she was capricious, prone to acts of incredibly gratuitous cruelty, paranoid, insecure, and greedy. If they'd had Cellphones there, every night when Zeus got home, he'd have hung his balls up at the door, and Hera would have gone through his call log, and questioned him at length about every call. Zeus would get so pissed off, he'd fling a few thunderbolts, and change into an animal, go to Earth, and have sex with a human woman. Just to get away from crazy wife/sister monster.
