Not to argue with you too hard, but I’m also in my 30s and you definitely downplay the “self-interest” angle more than I do. Indeed, I got my shots because I want to “do my part,” and I’m also not particularly worried about personally getting severely sick or dying.

But I also just don’t want to get sick at all because getting sick sucks.

That’s the same reason I’ve been getting yearly flu shots every year since college. Before COVID I never even really considered the personal risk of long-term side effects or death from flu (although I’m sure there’s some measurable risk) or the fact that flu kills tons of people every year. I just hate getting sick and from the evidence I’ve seen the flu vaccine is very safe and usually fairly effective at preventing the flu. Same goes for the COVID shots. I’d take common cold vaccines if they were similarly safe and effective and readily available.