Well there’s a reason for the emphasis on a vaccine. Assuming you need 50% of the population to get sick and recover (and that percentage is a guess, nobody knows what herd immunity looks like for corona), the health care system would implode. It’s already overwhelmed in many parts of the country with just 5 million cases. You’re talking 150 million+ cases of an extremely transmissible disease. Yes, many are asymptomatic, but still. The vaccine argument for herd immunity makes a lot more sense. Just ask any livestock rancher.