Antivaxxera believe in vaccines they just don’t think benefits outweight cons so the question is not using logic correctly.
I don’t believe in evolution so therefore I don’t believe in doctors ? I think antivaxxers are wrong but you are lacking logical know how or understanding of others
Because many Americans can’t cope with the idea that something bad happened to them that they couldn’t prevent unless there is someone to blame (and more importantly, to sue). We Yidden say “הכל בידי שמים חוץ מיראת שמים” and accept that not everything in the universe is under our control, and sometimes bad things happen regardless of whatgever actions we take. Secular society doesn’t see it that way.