Saying that a teacher who has a medical condition that makes them medically vulnerable should just give up teaching because they can’t have the vaccine? What an unpleasant individual you are!
You sound absolutely charming yourself!
Actually I have zero desire to go to school assemblies but just like you I am a brilliant and dedicated teacher who works in schools during the school day, but as a visiting teacher. One Primary school has not allowed me or any other visitors since last Autumn.
Instead I have had to teach over zoom and, since social distancing rules stopped, at my own home, after school and at weekends, fitting my own life around my students after school clubs, football , ballet etc .
Some children have stopped lessons because it's too much hassle for their parents, resulting in them losing out on enjoyment from learning a skill and me losing a lot of income. Of course the opportunity the school claims to give its pupils to learn the skill I teach is still promoted - with photographs- on the school website.
So yes, if you are medically vulnerable it's definitely bad luck for you but I still think it is extremely selfish to expect the rest of society to change permanently, other people not to be able to do their jobs, children to miss out on learning opportunities and parents not to be able to share important school occasions, just to protect you from an unquantifiable risk.