A 5 year old theoretically has a full life ahead of them, while the average living age is around 85 here. So these 90 year olds probably don't have much time.
I remember the basics when I was 5, a few days of kintergarden, some of my young friends, living with my grandma for a while. Now let's see what this has to do to compare an almost deceased group of 90-year olds to a 5-year old.
Once again, if you think the value of life is the same.. Let's say I instead used 80 year olds. The average age to live is 85.. So between them, they have approximately 25 years between the 5 of them. The 5 year old has 80 years to go.