Here's why you shouldn't:
Most cases of COVID-19 are not severe enough to require mechanical ventilation (artificial assistance to support breathing), but a percentage of cases do. This is most common in older adults (those older than 60 years and especially those older than 80 years). This component of treatment is the biggest rate-limiter of health system capacity that drives the need to flatten the curve (to keep the speed at which new cases occur and thus the number of people sick at one point in time lower). This is why social distancing is so important to saving the lives of others, not just to preserving one's own. This fact falsifies the argument that a young healthy adult can ignore the need for social distancing, accept a mild flu-like illness, recover, and move on. The burden on the healthcare system will also limit the availability of other types of health care, such as that required after a motor vehicle collision.Didja get that? You're a disease vector. We all are, all the time, and every cold and flu season is a reminder of it. The grandparent you save may be your own -- or maybe they're a doctor, nurse or delivery driver.
The Wikipedia article includes some nice little animated GIFs that show a number of possible responses and their effects. Go have a look -- and consider their implications.
* * *Here's something the geekier biomedical types are already thinking of, I'll bet: just how much of a ventilator does it take to get someone through a really bad lung inflammation, and how can that be improvised?
Before the polio vaccine, Australia had a problem with the high price of imported iron lungs -- so they started building their own, out of plywood and vacuum-cleaner parts, at a tenth of the cost. These days, assisted-pressure help machines for sleep apnea are darned near consumer goods -- but do they move enough air? Can they safely be made to help someone struggling for their next breath? Can you use them to handle the slightly less-severe cases?
Pray we don't have to find out, but remember, too, that we're a nation of tinkerers with a lot of useful junk to hand.