[IlyaMoroshkin]

If you are a healthy adult, COVID-19 is barely more lethal than the Flu, so what is the concern here?

[ivoras]

Many healthy adults have parents and non-healthy friends.

That's the pretty much entire reason for pandemic-mitigating measures.

[jodrellblank]

Having both your legs amputated is less lethal than the flu, is that your only measure of whether you want something to happen to you or not?

Even healthy people with no need for hospitalisation can be taken down for a couple of months of fatigue and symptoms from it.