When I was 18 I attended two funerals in a week.
One was the funeral of my grandfather, who died at the not very old age of 71.
He died younger than he should have, but he had still had a reasonably long, successful and fulfilling life.
His children were devastated. His older grandchildren too. The smaller grandchildren were oblivious, but having them there made everyone smile and see that life went on.
A couple of days later I went to the funeral of a friend from primary school.
She had cancer all through her teens and died in her first year of college. Making it to college before she died had been an ambition of hers :(
At her funeral there could be no "a full life, well lived", there were no children or grandchildren to remember her years after she was gone. There were her utterly, utterly devastated parents and twin sister.
I shook my other friend, the twin of the deceased, by the hand and told her how sorry I was and I am haunted to this day by the look of complete emptiness in her eyes.
There was NOTHING, not a single happy thing to take away from her death. It was just completely awful, a young girl whose life had barely started dying of an awful illness.
It was way, WAY more sad than my grandfather's death. He had 70 years to make his impact on the world. She barely reached adulthood.
I lost my 95 year old Granny last year and I really miss her and am very sad at her loss.
But she was going to die at some point, she was very luck to live a long, happy and health life.
I think there is something kind of fucked up about trying to compare a death in old age like that to an awful early death.