it is dumb if that's your only reason for not getting it. covid really doesn't give a shit if you're young. enough young people have died from covid OR have gotten long term complications from covid to where i wouldn't risk it. if you have access to a booster and you have no special medical considerations (e.g., immunocompromised) then i'd generally recommend you get one because the stats for boosted people are very very promising. leave a little less to chance.