Healthy children are at approximately one-in-a-million risk of dying from covid-19 if they get infected. It's more dangerous for you to drive someplace with your kid than for your kid to remain unvaccinated.
Children in risk groups should of course get vaccinated.
But we're much better off making sure the limited supply of vaccines go to older people in other parts of the world than to healthy kids in the developed world that don't need them.