Peachy, you don't owe him what he can't be bothered to do for himself. The fact is that he DOES understand how to live like a sober person. He just doesn't want to badly enough.
You don't have to pretend everything is good, but you and your boys should live in comfort to the best of your ability. Your husband is a grown man, acting like a child. Your boys ARE children. Which of these is your responsibility to manage? Have you tried Alanon/Alateen?