I thought about your post. I'm not sure you or some others see what you did there.True. But watch out we know nothing yet about immunity. We hope immunity exist based on other same type of virus but we are not sure at all yet.......
It's more complicated than that. AIDS virus still has no vaccine. After 40 year of research and millions dead. Flu vaccines has a success rate between 40 to 60%. We need to take out the political talk behind the vaccine and focus on reality.
You took the science (you know "follow the science") and layered on some conjecture. Let's call it a nice healthy dose of fear. In the media world, that would probably be what we call taking the facts and stretching them to form a narrative.
Let's assume immunity has a time limit. So we already have vaccines that require booster shots.
The last part about the vaccine might not be that effective. So what is your recommendation? Everyone should live in their respective caves for several years?
My opinion is you are letting the hysteria guide your thinking. Mankind will likely develop some immunity. It will also develop some type of vaccine whether it is a silver bullet or not. And as far as the existence of COVID in the world, mankind will learn to live with it and manage. That is the science.