How Does A Woman 5years Older Than A Man Date?

A lot of woman date younger men, and a lot of these relationships are very good. There was a tribe, everyone got to marry twice, the older men would marry the young women and teach them living skills. As the men got older, the younger wives took care of them in their dying days. Then the women marry the younger men and teach them living skills and they take care of their wives at the end of their lives. This way, everyone married twice, all were thought living skills passed down and all had someone to care for them at the end of their lives. Mind you, life expectancy was only about 40 or 50 yrs old so I doubt this would work in todays culture where life expectancy is close to 80 or so