Why does Zeus mistreats Hera?

Answer 1

Through infidelities yes. Hera is strong enough to maintain a level of respect from Zeus. A few historians and stories tell of a different relationship while older stories and the creation of the Olympian rule reveal Zeus's fear of Hera.

Answer 2

She was only jealous of the ones that Zeus had had with other women because they meant that Zeus had cheated on her, because she was his wife

Answer 3

Hera, the goddess of marriage, was jealous because her husband Zeus was constantly cheating on her with a range of titanesses, goddesses, nymphs and mortals.

Answer 4

Hera was the personification of matronly fidelity, but her husband, Zeus, as the personification of the sky, was wont to find other women with which to share himself.