Once vaccinated, even if you don't have the boosters, the protection level against illness remains high, even though we're not really protected from catching it. Combine that with the latest strains being relatively mild and a lot of people won't feel bad at all.
It is still putting people in hospital and some are dying. But we're now in the same territory as we are with diseases like flu that can hit some people hard and colds that can be dangerous to the old, the infirm and the unlucky.
It's a very different place to where we were three years ago. Get well soon!