Most of the time, nam tais yawm txiv, neej ntshav wouldn't support their daughter/sister to leave, but when they do, it's because they see that he's not a good husband or father. Rarely, a person will not change for you, but s/he will change for the next spouse...somet imes they don't even learn after being divorce 2-3 times.
It's hard to stay, like living in the dark, but yet, it's hard to let go and start over. You know what you want, fight the battle, and win the war. If you choose to stay, humble your heart w/ patience, and love him like no other woman can and hope he opens his eyes. Txuj kev ua puj nraub/nkauj faa is a rough road, too.
The first divorce, it's the other person's (your case, him) fault. The second is one's own fault.
#1 thing to an unhappy home, lack of love & communication.