As we all know, the old and sick are targets of the virus, but the rest of the population has little to worry about.
That is completely wrong. The rest of the population, especially young people, will suffer lifelong harm, strokes, brain damage and amputations on a scale not seen since WWII. Hundreds of thousands or millions of lives will be permanently disrupted. Many of the victims will die young. Taking care of them will end up costing society trillions of dollars. All of this can be avoided for the cost of hiring 300,000 people (paid, already on the payroll, and volunteer) for a year.
If you knew that about 100,000 young people were going to suffer from strokes and brain damage over the next year, you would never say "we have little to worry about." Even if it was a sure thing they would not die, this alone would be one of the worst diseases in U.S. history. The fact that 2 to 4 million other people are bound to die before herd immunity is achieved makes it far worse.