I'm with sceptical
My grandparents were married 65+ years - until death do us part.
In my extended family, there has only been 1 divorce, and that was after 30 years of marriage.
DH's family, on the other hand, have a strong family history of shorter marriages. The shortest, being just 3 1/2 months. The longest marriage, including his grandparents, aunts, uncles, cousins & parents, was 17 years for a first marriage and 20 for a second.
We are coming up to 14 years in November and in DH's family, are considered rare.