Got my 4th shot today (Pfizer, 2nd booster). They're authorized for the elderly but advice is still forming, since scientist don't yet have the data to give firm directions about the timing.
Overall, if you're my age, with anything underlying, they say, go get it. BUT...there's also speculation about the right timing. A few say waiting MIGHT be better as the immune response could be stronger if you do. Others mention companies working like mad to develop a new shot (for this fall, hopefully) that will also hit variants -- and that if that's coming, perhaps it's better to not take Booster #2 now, for a stronger response in the fall. You'd take it along with your annual flu shot.
Basically, as the general advice as of now is...if you're old or immuncompromised (or both), go ahead. If you're not or your location is not "hot", you can likely wait.
I read until my eyes hurt and decided to go with the general advice and not try to pretend I have special insight. I firmly believe 90%+ of scientists are genuinely and honorably trying to save the most lives and offer the best advice that's currently possible. If they get some things wrong I won't take offense. Science goes up and down like a pendulum and it can take a while to land on certitude.
Meanwhile, glad I got it because it does lower the tension internally. I still mask with an N95 indoors in public spaces, even a restaurant today where I went for pickup and saw it packed with VERY old people from the ritzy retirement community next door....and hardly any of them were sporting a mask. Kind of shocked me, for that demographic. I lurked in a drafty foyer until my order was ready and beat it.
Friends are mostly cautious and not shopping, but there's always someone who's desperate to go spend in public and can't get into ordering online. Friends, not many but it's picking up, are watching forecasts and meeting outdoors when it's warm. I have a lunch coming up soon with my pal on the Trees Commission. She loves to talk about it and hooked me up with a grant for free native trees and shrubs for my property!
All in all, sounds like this spring and summer should be a lot less burdensome, covid-wise, than the last. My secret is: develop near-agoraphobia, simplifies a lot of decisions. Turns out I'm not alone in feeling like a cave-creature who keeps stepping out then scooting back in. Good to know it's not uncommon.
hugs
Hops