There are some who see the financial and legal reality of divorce in the paper work, and then change their mind. Not a ton, but I have seen some. And almost 1 out of 5 former spouses, remarry each other. (Almost always a few years later).
So I don't buy that the "D" is THE FINAL STRAW, b/c it obviously is not for a significant minority.
But sure -- if no contact has been had, and You feel the need to be defined by or freed of your marital status, go ahead and file.
But do it so YOU can feel free or liberated or whatever. Not as a tactic.
OTOH, don't be bowled over if she calls you up and says "Hey, I'm still thinking!"
M: 57 H: 60 M: 35 yrs S30,D28,D19 H off to Alaska 2006 Recon 7/07- 8/08 *2016* X = "ALASKA 2.0" GROUND HOG DAY I File D 10/16 OW DIV 2/26/2018 X marries OW 5/2016