I think you summed up exactly what it's like getting fed up with one's marriage after a long time being married to someone. It's not that easy to "JUST BLOW IT OFF" even when one knows they are totally fed up & don't want to deal with it any longer.

Think we seem to always hold onto hope that they will change.....& that with the threat of divorce coming closer & closer that they will finally get it & know that they need to be changed as the threat draws closer & closer & even when we finally leave, we hope that they will finally get it & we will see the change & we won't have to go through the hassle of the divorce because the longer you are married the more of a hassle it is dividing everything up & having to even give up the things that were also yours in the split. I solved that problem by the end I was just so desperate to get away from him, I walked away with basically nothing, not even all my cloths & only a few pieces of furniture.