I'm sure if we asked the children of these addict and codependent parents, they'd say that its better to have one healthy parent to live with full time than two sick parents.
Thank you for giving your son a chance to break this cycle! To show him what a normal, loving, functioning home looks like.
I think addicts act like spoiled little children when they don't get their way (mine included!). So, you're doing the right thing by dealing with him like a spoiled little child. The part that hurts and is unfair is that they're not children; they're adults and should act like it.
I'm so glad you're still posting and are able to come here to vent and process! SR is a lifesaver!