Earlier this week, I had my first major "That's why I got vaccinated experience".
I attended a small birthday party for a friend. It consisted of three older couples all fully vaccinated. The event was inside. About an hour after arrival, there was a knock on the door and the birthday boy's nephew, his wife and the wife's sister along with a teenage son arrived to offer their best wishes. They stayed for over two hours. There wasn't a mask in sight. At first I felt awkward. Leaving would have seemed incredibly rude, yet this was exactly what we are warned against. Then I remembered the vaccination and told myself this is one of the primary reasons I got vaccinated. Such unexpected events are bound to happen over the next year. It's this kind of thing that makes getting vaccinated very worthwhile. Yes, it was a nice birthday party. And, yes, I continue to social distance and wear a mask. I don't want to surprise anybody else like I was surprised.
FWIW, my friend told me later he did not expect the nephew, and he did not even think about Covid and masks at the time. How quickly we revert to normal.