I really appreciate this thread, as I've wanted to discuss these issues with others but it's been so politically and emotionally charged that I haven't dared to bring this up among coworkers or friends. Thanks for everyone's efforts to keep this discussion free of those landmines while we dialogue about it.
Frankly, I never thought of this but I can certainly see this as a benefit now that you mention it.
I lived in Japan during the SARS outbreak and the H1N1 pandemic. SARS infected tens of thousands, H1N1 infected tens of millions, mostly concentrated in Asia. At the time, I lived and traveled throughout the region without so much as a moment's concern about getting sick.
While I say I'm not concerned about COVID, there is a bit of an asterisk to that statement. I'm not concerned enough to curtail any of the activities I would otherwise do, but I do realize there is a possibility that I could get sick. But I had never thought about how a vaccine could give me additional peace of mind, so I'll have to consider that. It's probably like the peace of mind I got when one day I decided to reach into my investment account and withdraw some cash to pay off my mortgage 10 years early. Although I'm pretty analytical, and I had measured the risk of a mortgage vs. the higher potential gain of having money invested in mutual funds, there was a distinct peace of mind that came over me when I logged into my mortgage account a week later and it said, "Paid in Full." I must have stared at that screen for 10 minutes and let the gravity of officially owning my own home wash over me. It was a feeling I wasn't expecting, and I bet it's the same type of thing the vaccine provides.