Vaccination slightly reduces the risk of transmission in any single interaction but over the long run that's irrelevant. Eventually everyone will be infected. Fortunately the vaccines are pretty effective at preventing deaths.

https://www.medicalnewstoday.com/articles/delta-variant-vacc...

https://www.medpagetoday.com/opinion/vinay-prasad/94646

There are 4 other endemic human coronaviruses that cause common cold symptoms. Evidence indicates the previous one emerged in 1889 and killed a bunch of people worldwide. Now most of us get infected with those viruses as youths and the resulting natural immunity protects us later in life.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252012/