I am old enough to remember getting the Polio Vaccine in Elementary School.
A Childhood Friend acquired Polio before the Vaccine was available. Lucky for him, he was only left with an obvious limp, but it could have been much worse for him.
If people want to live on a deserted Island, they don’t need to Vaccinate their Kids. Living in Society changes the Rules IMHO.
If I live next door to someone, I can’t justify burning Tires on my land because the smoke will drift over to my Neighbors Property. The same rule applies when it comes to Vaccinations.
Just my $.02, your mileage may vary.