"A small percentage will; a small percentage have."
Again, the fact remains that a small percentage of a very large number can still be a large number. So if we let COVID spread through a very large number of children and families on the presumption that they are a low risk group, a large number of parents will still die.
As for the idea that parents who die of COVID wouldn't have otherwise lived for very long anyway -- that just doesn't make any sense. A proportion of otherwise completely healthy people will die, and a larger proportion of the people who die will be in the ECV and CV groups. It is very well documented that a number of the conditions that put a youngish healthy adult in the ECV/CV groups have otherwise favorable outcomes.
You may have decided that the individual risk to you and your family is low and that's fine. But if as you say the most important thing to consider is the numbers, you need to recognise that you cannot generalise your own situation to the larger group of children and families either.