I think it is common sense during the worst and most dangerous pandemic in 100 years. It is no exaggeration to say that if we let this get out of hand, millions of people will die. Millions of people! Just as many proportionally as died in 1918.
JedRothwell : If fully understand your point as your environment most likely is highly vulnerable. But if 1'000'000 die then 950'000 of them are older than 65 and have preconditions. Most of the people with precondition did have a bad live style - so its their fault - just bad luck to live today. For the US things might be somewhat different as the country overall has a very bad live style and an outstanding and disgusting ignorance in respect to minorities and under educated low salary workers. May be US healthcare will safe the live of 1 vulnerable and prefer to let die 10 unlucky poor that just might need intravenous glucose because they are to exhausted to be able to eat and drink.
If you read the statistics of the second link its plane vanilla clear who dies (nobody aged below 18..) 96% over 65.
Swiss statistics overview of all states https://rsalzer.github.io/COVI…ex.html?lang=en#detail_VD
Best state statistics/graphics (French) site represents 4500 cases with all details. https://www.vd.ch/toutes-les-a…e-dans-le-canton-de-vaud/