A young child faces far more risk of dying in a car crash on the way to pre-school or Chuck-E-Cheese than they do of covid, but I'll wager you didn't give up driving your kid around. Your child could get struck by lightning, or get bitten by a rabid racoon, but (hopefully) you don't dwell on the risks and live your life paralyzed in fear by them (yes, these risks are the same order of magnitude of a child dying from COVID). The same goes for having your infant or young child injected with experimental vaccines, whose long-term effects are just as unknown and unknowable as COVID.