The problem for everyone else is that the vaccines aren't 100% effective. Also, we're not vaccinating children yet, and there may be some people who can't get the vaccine for medical reasons.

Another consideration is that if the virus is allowed to continue to spread, there's a real chance that it may mutate into a form that isn't stopped by the vaccine, and then we're right back where we started.

From a public health point of view, I don't see things getting back to ordinary people (and not just the foolhardy) having lunch with coworkers around the same table without masks on unless there isn't any significant amount of community spread going on.