[SmokingJoe]

The young healthy people are vaccinated for the same reason young healthy people were vaccinated against polio and smallpox

Joke post?
Over 300 million people died from small pox in the 20th century alone and small pox has been around for thousands of years.
You are going to compare some severe flu (coronavirus) to small pox now? Don't make me laugh.

[Cronos]

And no one has died from smallpox in decades.

Why? Because people got vaccinated