You miss the point. Vaccines PREVENT epidemics.
Epidemic of a any non-lethal disease such as chicken pox is no big deal. On the other hand even one kid becoming autistic or dying as a result of vaccination is unacceptable to freedom loving parents. If you want to be a serf of the big government, go ahead. I do not.
I have survived mumps, chicken pox, whooping cough with no lasting effect whatsoever. The only vacaccination I received as a kid was for small pox. But I got small pox anyway even after vaccination.
I can still break 80 on a 18 hole course at my age in the 70’s. I still walk all 18 holes = 7 miles.