To be truthful, I think it's a matter of weighing risks and benefits....
We lost my Dad years ago, and I'm the primary caregiver for my Mom (she's 91)....
My main concern about the shots are the side effects and the fact that we don't know the long term effects, but, due to my Mom being in a high-risk group, I would take them in a heartbeat if they would protect her. Since it's proven that you can still catch (and spread) COVID after taking the shots, I really don't see the benefit of taking them....
As a matter of fact, my Mom won't take the shots, since she has had several fully vaccinate friends who still caught COVID, and she has actually lost several to the disease. Her attitude is that the shots are worthless....