In a way this makes perfect sense. If I pop my clogs just after marrying a sixteen year girl (not that I'm thinking of that ) the pension fund could be paying out for fifty, sixty years or more. Your pension payment is assessed according to your expected life span; getting a much younger wife knocks that completely out of the park.
My (Swiss) company pension has a widows payment defined as 70% - but to a named person - who will receive this even if we divorce (God forbid).
Intrestingly enough, I was looking at the Swiss state pension, and widows there receive a redu