like the "pay gap" the married longevity argument is just another irritating myth promoted by the left and fem3.0.

https://www.psychologytoday.com/us/blog/living-single/200902/no-getting-married-does-not-make-you-live-longer

The most popular cheater method is to pretend that people who are divorced or widowed never did get married. (It is the same method used most often to make the bogus claim that getting married makes you happier or healthier.) Practitioners of this bit of artifice are trying to make an argument that goes something like this: "Divorced people don't live as long as married people, so that shows that getting married expands your life span." But divorced and widowed people DID get married!

Now let me tell you the results of what is probably the longest-running study of longevity ever conducted. It is the Terman Life-Cycle Study, started in 1921. The 1,528 men and women, who were 11-years old when the study started, have been followed for as long as they lived. Two groups of people lived the longest: those who got married and stayed married, and those who stayed single. People who divorced, or who divorced and remarried, had shorter lives. What mattered was consistency, not marriage. The results were the same for the men and the women.