And again, I'm just saying that this doesn't stop the introduction of the virus into the population, which is ostensibly the primary reason for requiring vaccination.

And what constitutes "vaccination"? 2 jabs? 3? 4? How are you going to verify vaccination records when most people are just getting cards that can easily be forged? What about people who have been vaccinated with a vaccine not approved for use in your country?

SARS-CoV-2 is well on its way to becoming endemic. There's likely to be a temporary phase where quarantines and/or proof of vaccination are required but this isn't going to be permanent.