I know when I was going through with my divorce I had no doubt in my mind...not one!
I did have doubts. Even though xah was in active addiction. I did what I had to do. Jerect, I feel for you, but even if you do file for divorce and he continues walking the walk, it doesn't mean that he has to leave unless YOU want him to leave.
It's a tough situation for you, I know. I know how you've struggled and I hate that you're still on the fence. Hugs to you girlie.