The risk of getting Hep B from a blood transfusion is a tiny number, but it's a bigger number than the risk of side effects from the vaccine.
Imagine the action of a vaccine not just in terms of how it affects a single body, but also in terms of how it affects the collective body of a community.
In the story of Thetis and Achilles, it's clear this isn't really a safe environment. She's gone down to the River Styx - the dead are being ferried across in the background. There's something in this mythology that says that if you want invulnerability, if you want immortality, you pay a price.
We've been using vaccination in some form for hundreds of years now. We have almost nothing in our modern medicine that we've been using that long, and it's been consistently productive even though, you know, the older vaccines were much more dangerous than vaccines we're using now.
The belief that public health measures are not intended for people like us is widely held by many people like me. Public health, we assume, is for people with less - less education, less-healthy habits, less access to quality health care, less time and money.