Here is some information from Johns Hopkins just because...

The vaccine helps prevent kids from getting COVID-19: Although COVID-19 in children is sometimes milder than in adults, some kids infected with the coronavirus can get severe lung infections, become very sick and require hospitalization. This is especially important to remember in light of variants, which can be very contagious. “The current vaccines are still effective in preventing severe illness from current variants of the virus,” Sick-Samuels notes. Children can also have complications such as multisystem inflammatory syndrome in children that may require intensive care or long-lasting symptoms that affect their health and well-being. The virus can cause death in children, although this is rarer than for adults.

The vaccine helps prevent or reduce the spread of COVID-19: Like adults, children also can transmit the coronavirus to others if they’re infected, even when they have no symptoms. Getting the COVID-19 vaccine can protect the child and others, reducing the chance that they transmit the virus to others, including family members and friends who may be more susceptible to severe consequences of the infection.

https://www.hopkinsmedicine.org/health/conditions-and-diseases/coronavirus/covid19-vaccine-what-parents-need-to-know

I guess it depends on whether you want them to continue to be healthy children or not.