Teeny,
You may well find the following uncomfortable to read Teeny but I make no apologies for that. If you have already read it then ok but it bears repeating.
What is the difference between those who walk away from an alcoholic at the first sign of trouble and those who cling to them?. There may be no black-and-white answers, but here are some characteristics that seem to be common to those who can't just walk away:
Low Self-Esteem -- For whatever reason, those in abusive relationships usually have a very low opinion of themselves. They may think they are unattractive, or too overweight, or not smart enough. Consequently, they hold on to their present relationship, because they believe that no one else would ever want them. They think it's the only relationship they will ever have.
Abandonment Issues Perhaps they were abandoned by a parent in childhood and the loss was traumatic. They go through life trying to avoid feeling that way again. They hang on because being in an abusive relationship is better than being left alone their greatest fear.
Need to be Needed -- They confuse pity with love. All of their relationships are with people who "need" them or are dependent on them in some way. They are rescuers. They don't leave the relationship because they think the alcoholic could not survive without their help.
Controlling They have a strong need to be in control. They take on responsibilities that do not belong to them paying the bills, repairing the house, mowing the lawn -- because those things just would not get done without them. They may complain about the alcoholic's lack of responsibility in these areas, but many times the truth is they would have it no other way because it satisfies their need to be needed.
No Boundaries -- They have trouble setting personal boundaries, standing up for themselves. They have a problem saying "no." They may try to set boundaries, but then feel guilty and allow those lines to be crossed, which usually causes more problems in the relationship than never having set the boundary in the first place.
Addicted to Excitement -- Many who are involved in alcoholic relationships find that they are attracted to the excitement, the chaos, the uncertainty, and even the crises. They cannot stand to be bored. They would find "normal" people terribly dull. In times of relative calm, sometimes they will even create a crisis, just to avoid boredom. For them, life must be a constant soap opera.
Acceptance Seeking -- Since many who end up in alcoholic relationships grew up in alcoholic homes themselves, they are comfortable with alcoholics because they know they will not be judged. Many are attracted to alcoholics in the first place because that is behavior that they are used to and most comfortable being around.
Martyr Complex -- There are those who seem to enjoy being in the role of a martyr, a perpetual victim, for some psychological reason. They enjoy the sympathy they receive when they tell their friends the suffering they have to endure as a result of the alcoholic's behavior. These martyr personalities seem to have the most problems if the alcoholic seeks treatment and finds sobriety.
Hiding Out -- As long as they have the alcoholic's behavior to focus upon, it takes the spotlight off of their own shortcomings. If they can point the finger at the alcoholic and blame all of the family's problems on his behavior, no one notices the part they are playing, including themselves sometimes. They are "safe" in the relationship because they can hide their own flaws behind the many mistakes of the alcoholic.
NOT everyone in an abusive relationship has all of the above characteristics, but most have at least some of them.
I feel for you Teeny, but particularly more so your daughters. They are the ones who are really suffering in all this by being caught in this crossfire and they are seeing and hearing it all or at least far more than you realise. You are playing a part in his alcoholism as well (see also the play scenario) and you minimised his actions to your DDs yesterday. His frankly crap private addiction specialist at £60 a time is also enabling him by excusing this alcoholic man in front of him/her by citing lifestyle issues and long hours. Your Hs primary relationship is and continues to be with drink; his main thought is where the next drink is coming from.
If either one or both of your daughters entered into relationships with alcoholics as adults I would not be entirely surprised; this is what you have both taught them about relationships. This is truly NOT a legacy you want to leave them.