I don't think that I need to enumerate the ways that the MC has done battle damage to his relationship with his wife. A lot of posters have unpacked that already. A number are already upset that we don't really have a choice in many instances or that he has canonically been a serial cheater. But I think that the most harmful part of their dynamic is his enabling her. His not being a good husband only compounds this as he is constantly thinking that he has no right to deny her love affair with alcohol because he is doing the same thing with women. This is the trap of codependency. He tells her it is alright with him, so it must be alright in general, right? When it goes too far, he internalizes it as a result of his actions instead of recognizing that she has a disease and needs medical treatment. When I heard that he was taking her to the doctor I had a small moment of hope until I realized that it was for fertility treatments and not substance abuse treatment and I facepalmed so hard. It isn't a matter of blaming him, just recognizing that he is not part of the solution and therefore part of the problem. I agree that her establishing a relationship with a treatment program is far more important than saving her relationship with her husband. On an unrelated note, the idea of trying to bring a child into this unhealthy dynamic is madness.
Could be, or he doesn't realize that she's a addict or what does that entail and views one more bottle of alcohol as not so bad, after all he also had a alcohol problem and could ''simply'' quit (well more like change from getting his fix from alcohol to sex).
And as bad as he is for his wife, she is and was over the years just as bad for him, driving him further away and into cheating, his way of dealing with their problems, it's really not like that she was a much better partner than he was.
But yeah those two are really not good for each other, at least not in their current situation.
Why the hell they would try for a kid when she has an alcohol problem, which both are fully aware off, as well as their releationship problems is beyond me.
I can only only see that backfire spectacularly, and will serve as either a wake up call to fix their problems, or as an break up.