It's been explained thousands of time already, most people will get it eventually, the game is to spread it over time. If you spread it over months hospitals will be able to better take care of patients (not only coronavirus, every other patients too).

> Do people really believe the virus won't be there afterwards?

That's why we're not in charge of it, many smart people are taking what they believe is the best decisions for their country/the world, they probably have more data and knowledge than you, and no, they're probably not as dumb as you're trying to paint them.