You are right that the vast majority of the people here didn't have a chance to stop the D by the time they post their first word. By that time it is usually too late.
However, I do believe if you do the work there is a better then 50% chance at some point you will get another chance. The problem is it will most likely be years down the road and you will have most likely moved on.
One of my best friends parents divorced when he was 12. His parents hated each other. They would get into fights at his baseball games. His dad remarried his mom did not. About 5 years ago his dad's W passed away. About a year later his parents got back together 40 years later.
You have to get to a place where you feel if your W wants to come back and do the hard work then great! If not, life is going to be great anyway.