It’s not so much about the people who ‘haven’t bothered’ but using my previous analogy I’d still be happy for my blood to go to someone who ‘hasn’t bothered’ to do it themselves.
It’s more about
- immunodeficient people
- people with cancer
- people who’ve had transplants
- young/old people who the vaccine might not work as well in
- people who’ve had the vaccine but for whatever reason it hasn’t worked.
Herd immunity creates a buffer around these people.