Well you know what they say, "you can lead a horse to water but you can't make him drink". Unfortunately no matter how hard you try to save a marriage, if the other person's heart (or head) is not in it, your success rate is going to be next to nil.
Besides as what is commonly pointed out on these boards, the dual role of DB'ing is also making YOU a better person. Of course the hope is that the WAS will recognize this and decide to give the marriage another shot. But if they don't then you walk away knowing you did everything you could, and you walk away a better person for you and the next significant other that walks into your life.
I'm sorry you didn't get the ending you wanted. Best of luck to you.
