I think I find myself in a similar position Polly. Not being able to see my GD's as often as normal is my big problem. Your last line says it all " what were they thinking" I suggest not a lot. The other problem is we have moved firmly into the " it won't happen to me" phase.
PS I have 2 friends who yesterday told me they are waiting for the Pfizer vaccine. It is more effective and less chance of problems. But that could be next year! Yes but we don't do much we won't get the virus. So why have it all? Silence.