Well done in taking that step. I cant imagine how hard that was. You are doing the right thing for you and your children. You have given him a chance in the past to get clean as a family and he couldn’t do it then. Maybe the reality of losing you for good will be the push he needs to get help.
Of course you care about him and that is why he had to go. I know I have enabled my husband. Letting him continue to behave in the way I have and not being strong enough to give an ultimatum and stick to it.