They aren't as necessary. But vaccinating children is meant to slow the spread of the virus as well as protect the rare case where a child might have had a bad case of covid.
Natural infection is so much better at preventing subsequent infection/transmission, that we should be advocating for people who are not at risk to go out and aggressively live life. Unfortunately many are not in favor of that because they don’t understand that viruses, and hCoVs specifically, are an unavoidable fact of life (and, indeed, necessary for health at a certain level)
There’s not really a way to make vaccinating kids make sense given that the main benefit of vaccination is personal risk reduction only. Furthermore conditions like myocarditis, which happens in young boys who are vaccinated at incredibly high rates (relative to no vax), are incredibly concerning given that the risk of COVID itself is so utterly insignificant in children.
I have thought the same since the first numbers showing children as a group are at minimal risk. For the healthy, get it and be done with it.
For the first year I was deemed a worker in 'critical infrastructure' so I worked on the road. I got laid off and then got the virus and recovered on my own at home. I'm going to keep living it and the screaming Karens can shut themselves in for as long as they want.
Myocarditis is something around 2x as likely but that's like 2 in a million instead of 1 in a million. But you are comparing it to the wrong set. You are much, much less likely to get myocarditis from the vaccine vs unvaxxed that catch covid.
And in the current climate, the likelyhood of catching covid, especially as an unvaxxed person is rather high.