And seriously? How are you supposed to accomplish "honest communication" with someone who has already made up their mind not to listen to you? Regardless of what you're saying, all they're going to "hear" is nagging or grovelling or ranting or some combination thereof, and be more likely to tune you out. Having a receptive audience is kind of key to that "communication" thingy.
ETA:
At some point in time in our lives, we come to realize that a chapter has turned.
Many of us also come to a point in our lives, when we're older, when it's less about the drama. Things we'd have freaked out about in our early 20s don't phase us as much when we're staring down 40. Sometimes the time for begging, pleading, raging, and cajoling has simply passed. Sometimes we realize that if this is what's necessary to keep him here, then he's not worth keeping here. If he can arrive at the "right" answer on his own, all the better. I mean, I'd want my man to come back because he wanted to, not because I guilted him into it. The latter tends to build resentment and contempt more than it actually helps anything.
Regardless of your views about marriage and relationships, some situations are just not worth hanging on to. At some point you and your self-respect have to have a Come To Jesus Meeting and you have to trust the universe to unfold the way it's supposed to. I wish I'd had that wisdom 15-20 years ago. I'd be in a much different place now. Whether that's good, bad, or indifferent, I have no way of knowing...I just know that hindsight is 20/20 and it would just have been different.