Adverse affects of closing schools for a year on 56 million elementary, middle, and high school students? Or maybe 500,000 people dying a bit early (just making numbers up on this one - adjust up or down depending on various factors)? That is not so one-sided obvious as many people on the internet seem to want to make it.
How many children will bring it home to adults? For me, 1 is enough and we are already there.
On the other hand, not all 56 million kids will end up ruined if education is delayed a bit or parents need to come up with new and creative ways to educate their children safely.
You're basically arguing to 'stay the course' during a global pandemic and fact is that isn't workable either.
This is equally as irrational as people who just want to fling the floodgates open.
~5 children per year die on playground equipment in the US. Are you actually proposing that we sit around until we've neutered a lethal virus enough that it's less dangerous than playground equipment?
The IFR for school age children is astonishingly low. Low enough that we don't even really have a good sample size. CAs data right now is showing 1 death out of ~50k infections. My first Google hit with IFR estimates for those age ranges puts them at 0.0016% for 5-9, and 0.00032% for 10-17.
Assuming every single one of those kids is in the higher risk 5-9 bracket and that every single one gets infected, we would end up with less than a thousand fatalities. That's about 10% lower than children that die from drowning (or congenital birth abnormalities, or drug overdose/poisoning, they all hover around 980 per year). It's slightly higher than the number of children who die from heart disease.
On the other hand, it's less than a quarter the number of children who die in car crashes per year, and less than a third the number who die from firearm accidents.
I don't suppose that you're going to stop putting your kids in the car, despite it being 4 times more likely to kill them than the worst case scenario of Covid in schools.