Because people are people man. You can't find hand sanitizer anywhere, already. No masks either. Already reports of stores running out of stock on some things. Coworker said the other day she went to Costco and lots of items were out. I'm sure those will be replaced for now. But you've been around long enough. You know how people do.
And about the healthcare system...you ought to take a look at how many hospital and ICU beds there are. Not many. This virus is much more highly contagious than the flu. There is a real potential for rapid community spread once it takes hold. We're doing nothing to prevent that. If you get a large influx of people who need to be treated at the hospital, you will have a problem really quickly. Look at what's going on in Italy now. That's happened in a span of just a few weeks.
Am I wrong?