You probably should have said "will not," rather than "may not." There's simply no question that, in the US at least, it's going to be several months before there's a supply of vaccines to inoculate even a majority of the population. Priorities will have to be established (and probably re-visited in January, to assure that the Trump people used rational approaches) - I would assume that front-line healthcare workers, and people in especially vulnerable populations, would be the first priority. These latter to include the elderly in institutions, and employees in sectors that involve lots of interpersonal contact (grocery workers, people shipping/logistics, etc.).
I'm a senior citizen (e.g, over 65), but realistically, I'm not especially vulnerable - because I have (by choice) little or no exposure to potential virus carriers. We do not go out socially at this time (not to restaurants, not to theaters, not to church); we've even taken to having groceries delivered rather than going to the grocery store. (A $7.95 delivery fee is a small price to pay, on a $300 grocery order, for peace of mind!) So, I don't expect to be vaccinated until some time in the spring - probably at my next regular semi-annual visit to my primary care physician (assuming they have a reliable vaccine available at that time that doesn't require liquid nitrogen storage, which I doubt they'd try to handle in-office!). I see no need to try to push ahead in line just because "I'm old!"