OP he is an addict, he doesn’t have a choice about what matters most to him. Addiction is like being possessed by a demon that takes over your mind and bends your thoughts to it. when he’s not drinking he’ll be thinking about his next drink, and when he is drinking he’ll be thinking about the next, how many he can have, how can have another and another and how he can cover his tracks if he needs to. getting clean is like exorcising a demon, and he is the only one who can do that, but he can’t until he decides he wants to take his mind back, and with alcoholics it’s not even as easy as that, because when a body is used to having a steady stream of alcohol it needs it otherwise it has a meltdown. Alcohol screws with brain chemistry, so the brain needs it to stimulate its reward centres, and that’s not even mentioning the physical symptoms or the life long damage to his health. It takes a lot of dedication, self control and hard work to get dry and stay dry, and if he’s just box ticking there’s no chance. Alcoholism doesn’t just go away when you go to one counselling session, it doesn’t work like that.
You know what you have to do here. Maybe losing his wife and child will be the kick up the arse he needs, or maybe it won’t and he’ll get worse, but allowing him to stay in your life while he continues to drink will only ruin yours, and your child’s, because while there are no consequences for his drinking there’ll be no need for him to stop.
He can still turn his life around if he wants to, and you can still have a happy future and raise your child in a calm and loving environment, you just can’t do that together.
Even in the best case scenario he gets himself dry, but you’ll always be worried that he’ll have another drink and relapse, and it’ll start all over again. That is a lot of worry to live with, and you’re a million miles away from even reaching that point while he continues to drink.
OP there can only be a happy ending if he seriously starts to try and make it, it’s not in your hands, and at the moment he’s not even looking seriously to start. Don’t let your life be a story you can’t control. It’s true we can’t always control what happens to us, but living with an alcoholic is relinquishing all control to a drug.