There's only so many trillions of dollars the Fed can print before the whole structure of the economy buckles. And when economies buckle, death and despair ensue. The economy is about more than just making money. The Great Depression caused a lot of secondary effects including World War II. We definitely want to avoid situations like that.

EDIT: All complex decisions involve trade-offs. Right now, there's at least a few dozen more likely ways that people will die other than COVID-19. Heart disease, cancer, car accidents, even seasonal flu currently has a higher death count. You cannot lock down the economy for months on end, ratchet up unemployment to 30%+, and continue to feed people and keep their housing and shelter paid for. People's lives and livelihoods depend on the economy staying functional and healthy. It's not trivial. You have to find some way of moving forward without locking down all 320 million people. Maybe you look at areas of outbreak and you quarantine those areas on a piecewise basis. You ramp up testing, you use masks in public, you do something pro-active to keep the economy going. You provide assistance to those that are at high risk, but you let low risk individuals get back to work and keep the economy moving. The food you eat. The healthcare services you depend on. The military. The semi-truck drivers delivering products and services. The aircraft to transport products and people. All of that depends on the economy working.

Kindly keep the nasty comments about trying to dissuade me from discussing these important topics to yourself.