Men should marry women who are 15 years younger

It's not me, it's science. SCIENCE!

"We studied how parental age difference at marriage affected [families'] reproductive success among Sami people who married only once in their lifetime[s]," says ecologist Samuli Helle of the University of Turku in Finland. "We found that marrying women 14.6 years younger maximized men's lifetime reproductive success—in other words, the number of offspring surviving to age 18."

The researchers did this by examining church records of 700 marriages from the Utsjoki, Inari and Enontekiö populations from the 17th through 19th centuries (in order to eliminate the effects of modern medicine on child survival).