...
I ll explain since you’re dumb.
say there are 100 of us. 75 are vibrant and strong and 25 are feeble and or old like you. We isolate and the protect the 25. 75 of us go out at the same time and get the virus. We recover and all 75 have antibodies and are immune. Virus has no where to go and dies out and then the 25 rejoin us. Now you’re piece releasing the 75 a few at a time and we prolong the lockdown and the 25 remain at risk longer.
Hopefully this explains it since you’re very stupid.
And what about to isolate and protect the 75% and let the other 25% live free?
That doesn’t make logical sense. The 75% are the ones working and earning and producing.
Why do you bring this parasites not in gas chambers? That's cheaper and not less efficient but less suffer and less waste of their money.
"Herd immunity" means to [let] infect all people with Corona. If someone likes to make this planful, then this is nothing than the idea to use the Corona virus itself like a vaccine. (But without the advantages of a vaccine (as for example boost effects)).
Asides that still no one knows (in sense of sciencifical research) whether someone is resistant against Corona, who was once infected, so a herd immunity also could be impossible in case fo Corona ... keeps the general question: Who - for heavens sake - likes to eliminate a pest with a pest or the devil with the devil?
And don't forget: In the time, which we wan now, we were not able to finish a specialized medicament or a vaccine - but both is in good progress. And we are better now in helping the victims of Corona. We have more material like protection clothing, respirators and so on and so on. But all this only one person in the world was able to do: the narcissist Donald Trump

- who is by the way the worst destroyer of the US-economy in a longer term, because he teaches the world not to make business with the USA.