Thanks everyone for adding more to this conversation. V - you paint quite the picture and it is truly sad to see that this can be the fate for many of the wayward folks. It's interesting to see that you have seen most recons happen with walkaways rather than waywards - I remember somewhere Michele talking about how turning the ship around with walkaways was so much harder.
The other thing I wanted to add, a point which I've seen AS make many times - DB is probably one of your best chances to turn things around in your MR. You saw that begging pleading and all of that didn't work and actually created more disrespect and nonsense for the LBS.
If you didn't try DB, what else did you have in mind to try and save your MR? At least DB gives you a good chance to get your MR a second new and improved life, and on top it gives the LBS a real opportunity for personal growth.
And do you honestly want to go back to the same person who walked out on you / cheated on you?
So, I don't know the success rate for DBing, if you measure success as only reconciliations. But I can't imagine it being any worse than anything else out there.