“Who here thinks things will return to normal…….”
They will at some point. Every other such event in history has ended even before the advent of vaccines and anti-biotics.
“once sufficient numbers have had the vaccine?”
The various vaccines effects in the real world have yet to be proved/proven. If they do confer some degree of immunity, and/or reduce transmission and/or reduce the risk of severe disease they will speed a return to normal.
Or we have arrived at an extinction level event. I don’t think this is the case as I don’t think this virus is virulent enough (yet) and the majority of people have relatively minor levels of morbidity. By relatively I mean compared to those requiring hospitalisation and/or ventilation.