@AllOfThemWitches
I thought marriage covered 'in sickness and in health.'
An addiction is a sickness.
If her husband was a drug addict spending family money on his addiction, she should stay 'because in sickness and in health'?
If her husband was a gambling addict risking their home with his addiction, she should stay 'because in sickness and in health'?
If her husband was a sex addict repeatedly cheating on her, she should stay 'because in sickness and in health'?
Why on earth do you think that addiction means someone can behave how they want and hold someone to ransom due to marriage vows, despite the damage they do to their partner?
Does 'in sickness and in health' override the other vows where the partner with an addiction also promise to love, honour, cherish etc their partner?
And OP's primary responsibility, married or not, is to her children. It is not in their best interests to grow up under the same roof as someone who drinks too much despite knowing the consequence of doing so will be to urinate on his family's furniture / on himself.
With a man who has such little respect and care for them that he turns over a cushion he's pissed on instead of cleaning it. That isn't his addiction, that's a conscious decision to not deal with the consequences.
With a man who laughs when his daughter finds a puddle of his own piss on the floor instead of apologising or feeling mortified. That isn't his addiction, it's his authentic reaction. He doesn't give one shiny shit.
Even if he has an addition, it doesn't give him the right to reduce the quality of life and mental wellbeing of his wife and children 'because in sickness and health'.