I posted a pic of my daughter getting vaccinated last week, and the hospital where my wife practices wanted to use it in the media to feature kids of medical providers getting vaccinated (all done with her permission, of course) They asked her for a quote about why she wanted to get vaccinated; we were expecting a response like "because it helps me stay safer at school" or "because now I'm less likely to get sick" or "now I can visit my grandfather in the nursing home." Instead, she hits us with "because I wanted to do my part to end the pandemic."
See, even a kid understands herd immunity and its importance. I don't know why some adults can't wrap their heads around it.