Without doing the math, I'm going to estimate that at least 70% of the US adult population has at least one comorbidity that puts them at risk for a worse COVID-19 outcome. Considering that 50% of the US adult population alone has hypertension, that's a whole lot of relatively healthy and otherwise productive people that are at increased risk.
These aren't just people sitting at home doing nothing. These are your neighbors, your friends, your colleagues, probably even family members. People you depend on, like plumbers, sanitation workers, accountants, physicians, teachers, nurses, mail carriers, etc.
But hey, screw them. I guess we should not expect others to act in response to their [sic] comorbidity.