I see. No, I don't think anything is "unnatural" in any esoteric sense. I only use the "natural" word to define the case of getting the immunity through contact with the virus in the wild because no better word comes to my mind. I imply no positive/negative meaning.

> in the future, just like those who received the vaccine you will need some sort of re-exposure via contracting the virus from another person or via a vaccine in order to maintain your immune response.

I just believe I contact it every day (or every week - I don't really know what the percent of infected people around is) and maintain my immune response this way. I use crowded public transport several times a day (wearing a mask of course), also meet many people and they mostly don't wear masks outside public transport and groceries (and even there many people leave their noses uncovered).

And I don't even have to speculate about this as long as I watch the level of the antibodies.

I don't say I am going to avoid the vaccine forever and rather go get infected when my immunity wears off. I just believe I only should go and get the shot once I see the level of the antibodies decreased. E.g. the Austrian government thinks the same.

Am I wrong?