Much like we should never stop vetting, even if we think he is HV, I'm coming to believe that women should never completely shut the door on other potential suitors. I'm of course assuming the woman married someone who met all her standards, and not that she settled for LV trash. Even still, meeting standards shouldn't be the be-all and end-all. There might, however bleak this chance may be, be other men who even exceed those standards. In this case, a married woman would benefit from exiting her marriage and entering a new one. I know this already happens in cases where his inevitable scrotiness rears its ugly head, leading to divorce. But in this case, up until the divorce, the wife will have lost time in possibly finding a higher-value man. She would have benefited the maximum had she hadn't blocked advances from potentially beneficial men.
Marriage is a contract. And, at times (so many times, from what we see and hear, sadly), this contract might not benefit you. By keeping her options open, a woman safeguards her well-being and future. It goes without saying that this isn't supposed to be done openly, for the woman's own safety, physical, financial and psychological. You never know (we actually do) how an enraged scrote might react.
Marriage is a govt contract. I like the idea of having to renew it maybe every 10 years, like you have to your license or re certify if you are in a scientific field. That way both parties know that in 10 years time, if something doesn't improve or if promises in the contract were broken, then they can get out of the marriage. I think that's a more realistic take now that people are living until they are 80+ years old.