As a woman I can say that many womwn I have known has wanted a divorce simply because they wanted out, you cannot FORCE someone to love you!
Key is nuture your relationship love and want your spouse do it for yourselves FIRST and your kids will reap the benefits..Staying for the KIDS sake is utterly ridiculous IMHO....
Fortunately my marriage was wonderful and our boys could see that we loved each other. When one stays in a marriage just for the kids and the kids see two miserable people they just assume that is what marriage is all about rather than that it should be based upon love. How healthy will their relationships be?