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You may not pick up the coronavirus sequestered in your home but then again you might. Most people are still getting mail. Other than preppers, everyone is bringing food into their house in some fashion. It's difficult to cut yourself off completely with no outside contact.
My wife is staying home but I go to work every day, bringing God knows what in with me.
You can also pick up lots of nasty bacteria from counter tops, phones, TV remotes, etc... Keeping your hands clean is always a good idea and generally good advice with or without a covid-19 outbreak.
P.S.
I don't know how I feel about your comment regarding pushing us to see just how far they can. It definitely reeks of conspiracy and may be crossing the line regarding the discussion of politics in this thread. But I think it might also be the truth.