Something that we've discussed in your thread before is worth remembering: D is not the end. Some success stories have stopped on the day of the signature, some have gone through D and the reconciled. 25yearsmlc is fond of mentioning 2-3 couples in her family that have remarried after D. I think you focus too much on the D being the end. For me, it's a painful step that I dread, but I almost see it as a step towards R, when my WAW has finally made her point that she's free to dump me and I've shown her that indeed she can go. Then she's free to come back.
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.