I think you have given this man every possible chance.
Please please please do what is best for you and your daughters,
including not dealing with him in yet another rehab if that's how you feel.
What is going on legally? I don't want to sound mercenary, but you should try
to protect some of the assets from the marriage if at all possible for your daughter's future needs at the very least.
I must agree with Hammer--lower your expectations and don't get hurt anymore.
It needs to be about you and kids from now on.
You've come a long way--you can do this.