As an article in Nature last month put it, a "massive UK study of COVID-19 cases shows that people who are jabbed have good immunity at first, but quickly become more vulnerable to the fast-spreading Delta variant."
The following passage from the article I have linked to, however, prompts me to wonder if I should not get the shot after all (I turn 80 next month):
Any knowns and unknowns concerning vaccine risks must be weighed against the known and unknown risks of COVID-19 itself, which includes, of course, long-haul COVID complications. For many people, especially the elderly and individuals with various pre-existing conditions such as hypertension, diabetes, and chronic liver disease, this should be an easy choice.
I do have hypertension, and take medication for it. It's the only medication I take. On the other hand, I don't like being bullied. Nevertheless, I'll think it over some more.