This is the mistake people are making even after 2 jabs you are not immune! You can still catch it maybe not as bad for the majority of people but there will still be some who will become seriously ill.
There’s plenty of evidence to suggest natural immunity and pre-existing/cross reactive immunity..
What I think you’re suggesting with the 2 jabs (I may be incorrect) is under the presumption that exposure to the virus hasn’t already happened naturally or any element of cross reactive immunity is in play. This is when (like flu) having the jabs doesn’t necessarily mean you won’t catch it but will potentially lower its impact.
Natural/cross reactive/unexposed immunity links:
“Neutralizing antibody levels are highly predictive of immune protection from symptomatic SARS-CoV-2 infectionâ€
https://www.nature.com/articles/s41591-021-01377-8“Protection of previous SARS-CoV-2 infection is similar to that of BNT162b2 vaccine protection: A three-month nationwide experience from Israelâ€
https://www.medrxiv.org/content/10.1101/2021.04.20.21255670v1.full.pdf“Pre-existing T-cell immunity to SARS-CoV-2 in unexposed healthy controls in Ecuador, as detected with a COVID-19 Interferon-Gamma Release Assayâ€
https://www.sciencedirect.com/science/article/pii/S120197122100120X“SARS-CoV-2-specific T cell immunity in cases of COVID-19 and SARS, and uninfected controlsâ€
https://www.nature.com/articles/s41586-020-2550-z“Selective and cross-reactive SARS-CoV-2 T cell epitopes in unexposed humansâ€
https://science.sciencemag.org/content/370/6512/89“Presence of SARS-CoV-2-reactive T cells in COVID-19 patients and healthy donorsâ€
https://www.medrxiv.org/content/10.1101/2020.04.17.20061440v1.article-info#disqus_thread“Unexpected detection of SARS-CoV-2 antibodies in the prepandemic period in Italyâ€
https://journals.sagepub.com/doi/10.1177/0300891620974755“Human neutralizing antibodies elicited by SARS-CoV-2 infectionâ€
https://www.nature.com/articles/s41586-020-2380-z“Covid-19: Do many people have pre-existing immunity?â€
https://www.bmj.com/content/370/bmj.m3563“COVID-19: Public immunity ‘significantly higher’ than tests suggestâ€
https://www.sciencefocus.com/news/covid-19-public-immunity-significantly-higher-than-tests-suggest/amp/“The Coronavirus Is New, but Your Immune System Might Still Recognize Itâ€
https://www.nytimes.com/2020/08/06/health/coronavirus-immune-cells.html“Anti-Spike, anti-Nucleocapsid and neutralizing antibodies in
2 SARS-CoV-2 hospitalized patients and asymptomatic carriersâ€
https://www.medrxiv.org/content/medrxiv/early/2020/05/18/2020.05.12.20098236.full.pdfAlso in regards to the jabs is there not a danger by jabbing too many people that we are actually adding to the mutations through vaccine induced pathological strain replacement?
“Vaccination, which intensifies and modifies selection by protecting hosts against one or more pathogen strains, can drive the emergence of new dominant pathogen strains-a phenomenon called vaccine-induced pathogen strain replacement. Here, we review reports of increased incidence of subdominant variants after vaccination campaigns and extend the current model for pathogen strain replacement, which assumes that pathogen strain replacement occurs only through the differential effectiveness of vaccines against different pathogen strains. Based on a recent theoretical study, we suggest a broader range of possible mechanisms, some of which allow pathogen strain replacement even when vaccines are perfect-that is, they protect all vaccinated individuals completely against all pathogen strains. We draw an analogy with ecological and evolutionary explanations for competitive dominance and coexistenceâ€
https://pubmed.ncbi.nlm.nih.gov/17459810/