Bud-I am about in the same place after 33 years and 3 different WAW episodes.
There just comes a time it's not healthy anymore, for either party. She is nice, she visits regularly (alot less regularly lately) we have been intimate on a regular basis until the last few weeks, but as far as emotional support, or being there as the sign up sheet spelled out on our marriage (at least I thought it was a 24/7/35 committment) it's not there.
I've come to the conclusion that although with her mental state she maybe just can't do it, or won't make much of an effort to try, I think God knows I've been DB'ing for 12 years and I have no doubt at this point there would just be another WA episode, and I cannot-WILLNOT go through anymore of those.
I do believe that if you've worked your buns off for years, and there is no try from the other side, it's time. I just have to grow a pair and set the boundary and be willing to follow it myself.