Hmm I do appreciate the comments. With only two suggestions so far that would result in closure of the conflicts (coin toss and give in), so far it does not look like there is much reason for hope here.
Though the example issues I cite are not matters of faith or morals, do those who suggested giving in really think that intimacy could ever exist in a marriage where one spouse ruthlessly has their way on such issues? Really? So if my wife decides to discuss deeply personal and seriously slanted positions with friends and family, I should accept that with all the destruction that comes with it. I mean, I get it, that is what I have been doing for many years. I have not been at peace about it, though.
As we approach the end of our child rearing days, I am looking to the future saying to myself, when the kids are gone, why in the world would I want to spend my remaining days with someone who treated me so badly. Just seems that there could be other ways that people agree to resolving conflicts. Something we could both agree to. I guess maybe there is no such thing.
I do not think the either of the two suggestions are correct, at least on the fundamental points.
You said on another thread you consider your wife a good person but a very difficult wife. Well, a couple of thoughts come to mind.
First, and again I have an impossible time believing this has not been stressed by every counselor you two have gone to: you have to insist marital troubles stay between the two of you, and do not get discussed with children or other family members. This is such a no-brainer, that one has to ask why she cannot accept it. And the only answer is that she feels a need to talk to someone about it, regardless of the harm it does. It is a habit she likely cannot break easily. So there is one exception: both of you need a good spiritual director (note: I did not say counselor). This is imperative, IMO.
If that can be achieved, good spiritual direction and privacy, that is a huge first step.
Second step, 30 years ago you married this woman and she is your wife and you have a life-long responsibility towards her well-being, both materially and spiritually. You have to accept this as your cross to bear. You have to approach everything with the intent of loving her.
The best advice I ever heard of was a marital counselor gave to my brother and his wife: it was this. If nothing else, start out by being kind to each other. Do little things, open doors for her, do the dishes, shrug off minor criticisms. This does not mean give in. When Christ said to turn the other cheek, he was not saying give in. He was saying, stand your ground in a loving fashion, say to them “I am here with you, despite your behavior to me”. I believe Fr Barone has a couple of very good examples of this early on in his book Catholicism. In one of the first 2 or three chapters, look it up and read it, it will help.
Finally, the kids are almost grown: then I would suggest you develop a good hobby for yourself. Something you enjoy, something that is well-spent leisure time, will give you some space, and will keep your mind on something else part of the day.
But, IMO, you promised to be married to her, it is wrong to give up. Again, you have a responsibility to help her get to heaven. The old saying “the grass is always greener on the other side of the fence” also comes to mind.
God bless.