Umm, I think anyone who was thinking ahead was thinking that this would be a regular part of our lives for a good while and unless everyone in the world quickly went and got the shot, we'd be dealing with ongoing flare ups due to waning effectiveness of vaccines/disease antibodies on a regular basis for at least a few years. I figured I'd be getting a booster shot periodically, at least. Now we've gotten enough data to understand that yes, boosters are going to be required and we have a general time frame as well, at least for two of the vaccines. I suspect when Moderna turns in their numbers they are going to be pretty similar to Pfizer.
I mean, you can pretend to be dumb, but all of this stuff logically follows if you think about all the other vaccines that are available for all manner of other diseases in both humans and animals. The only time we stop with vaccines is when enough people/animals have gotten sick/vaccinated that we've eradicated the illness. And the only reason we don't get some boosters for diseases that still roam the planet is because there's no one telling us we need to in order to go back to work, or because our risk diminishes for certain diseases as we age out of childhood. This isn't something new with COVID, this is just maybe something you never thought about before COVID. But now you know, and you can think about it some, and I'm sure you'll be fine with following the protocol.