> Many people with coronavirus are completely asymptomatic, recover fully and don’t even realize they had it.
I'm not disputing any of these. YOU will be fine. The problem is, you will spread it to a lot more people and eventually the serious ones with underlying conditions will need medical care and eventually the health care services are going to be overwhelmed and rendered helpless (like is happening in Italy right now).
So basically, they're asking people not in the risk like you and I to at least not spread it to other people who might be at more risk.
You're being too skeptical of the news. WHO and other organizations are very clearly warning to take this more seriously. Pandemics are not declared every other flu season.