I don't regret it one bit!
I know some refuse through fear of unwelcome side-effects beyond short-term reaction - a genuine hazard of most medications bu the worse the side-effect the less the risk. (Risk is not the same as hazard.)
Others seem to prefer risking of being ill with a disease they can transmit to to others, than being told, as they see it, what to do by those in "authority". The same authorities who just happen also to create the medical services generally we all need from time to time .
A few apparently think infectious diseases are not real, but highly-incredible political constructs by vague entities with fantastical motives.
Others still refuse through sheer gullibility, lack of basic science knowledge and no appreciation of the nature of risk. Such people are easy prey for anonymous (anti-)social-media ignorami - and liars - making for their own unknown reasons, allegations that fail even simple scrutiny of logic, let alone school-level science.
Like so many umpteen millions of other people, I have been vaccinated against -
Poliomyelitis,
Tetanus,
Diphtheria (I think),
Tuberculosis,
Influenza (annually, starting perhaps 10 years ago),
and now,
SARS_Covid_19 - and I will take annual re-inoculations if advised.
Notably, of all those, only Covid has given rise to so much pure ignorance, fear and downright wilful pro-disease, pro-pandemic, pseudo-political, anti-health campaigning.
