Because standing doesn't seem worth it at times. I'd be 100% fine on my own, I'm sure... I really don't need a wife who is just a roommate. Yet I can't help but think that she may come around and thank me some day. Or not, who knows.
Your quote about "can't help but think that she may come around ...". You've been with your W a long time. You know her. I think you making this statement means you should continue to DB. She is still in the house with you.
Regarding touching and informing your wife you will not be waiting, I'm not sure. Touch is pursuing and I'm not sure how your W would respond. The statement about not waiting would certainly put pressure on your wife.
As the other posters indicated, dig deep. I know you can do that.