If half of US population gets the virus... that's 1.65 million deaths at %1 mortality rate nation wide. And that rate may go up should they all et it in short order and hospitals can't keep up.... Perspective is key on this...
We can't eradicate it right now... but we can slow it to keep the healthcare system from getting swamped....
That's why this has re-opening has to be balanced, and based on local conditions.... there is no "one size fits all" here.