The problem is that it's not easy to determine who is vulnerable. I have a 39 yo former colleague who passed away due to the coronavirus, previously in peak ath

The problem is that it's not easy to determine who is vulnerable. I have a 39 yo former colleague who passed away due to the coronavirus, previously in peak athletic form with no known health problems. How would you know who to isolate? Plus, it's not just about death, but life long life quality impairments due to tissue necrosis, especially the lungs. Sure, probably single digit percent of people will develop this, but why risk ?