I love how some speak of the what will happen with confidence as if it was factual certainty. It is not. It may be true but no one knows at this point. Medical experts admit that what little testing has been done in inconclusive on a lot of topics like how long the virus survives outside a host, infection dose that actually causes sickness on people with healthy immune systems, etc. The medical experts repeatedly say that we must assume the worse possible outcome and prepare based on that. The worse possible outcome is not a guarantee. That's why it's called the worse possible outcome, and not just the outcome.
Now, before you go freaking out. I am working from home. We are using pickup service for groceries and not going in stores. We take extreme precaution with my in-laws that are older and have health issues. We go pick up farms supplies, etc. they need and drop off at their house so they don't get out. If my kids go help on the farm - no sharing vehicles, no going in their house, never get within 6 feet. We use common sense.
There is a difference between using common sense and completely shutting the world down.