My second husband was hospitalized and almost died of liver failure. When he recovered enough to tolerate a biopsy, it turned out he had EARLY cirrhosis and would be fine if he stopped drinking. He went back to it, and somehow, 20 years later, he's still alive. No clue about his current health (which has to be abominable) but at least I don't have a front-row seat to the slow-motion train wreck of his life.
You can't possibly know the state of his liver. Some people never develop cirrhosis.
He's ALREADY abandoned you and the kids, in every way but physically moving out. He is abusive and dangerous to all of you. PLEASE don't file for divorce without a plan that includes working with a DV advocate.