I believe you are attempting to paint a picture of your sitch and in that context, I absoluetly agree.
The people on the BB have been delt different hands. There are similarities and there are differences between every situation. A very high percentage of the DB posters are here for the greater good. They throw their heart and soul into the DBing process and discover miracles about themselves. Some are fortunate enough to save a crumbling relationship. Children, in broad terms, are best raised in a loving home with their biological parents. But that is as far as I dare go.
The difficulty is for each individual situation to conform to another. It isn't possible. There are too many personalities and too many variables that come into play. I believe this is the thorn raised by this thread. These are very personal issues and instances. We all have tried our damndest, but our partners were not on the same page for a wide range of reasons. We all know who we can control.
Your opinion is valid sg. It fits your situation and I believe you stated that clearly. I think even Michelle writes that at some point we need to do what is best, whatever "best" may be.
Not all M's will be saved, we're testaments to that. All of those that can, should be.