That makes sense, CityGuil...but if your spouse isn't healthy, then do you leave/ignore them until they are healthy? Do you just try to understand their POV considering their issues, or take it at face value?
No, I don't think leaving or ignoring is the answer (aside from abuse) if one spouse isn't healthy. I do think in many cases it only takes one to change the dynamic and perhaps that will help lead BOTH spouses to growth.
Sadly this usually only happens after the fact when one spouse has shut down and checked out.