Under 60.
But I’d say under 40 was really young to die.
My parents are grandparents to an almost teen, would It be sad if they died tomorrow? Yes of course, however they travelled, watched their children grow up, one get married, watched three grandchildren grow so far. They have lived a pretty full life tbh.
However a 30 year old say dying before ever getting married, having children etc if that’s what they would of wanted is very very sad.
People seem very focused on living as long as possible, but it’s quality of life I’d say over quantity that matters and that goes for all ages.