tl;dr: zero covid was a gigantic waste.
Singapore is very close to 100% vaccinated; the remainder is almost all children too young to be vaccinated.
A friend of mine went to a festival a few weeks ago where over 100 people were infected out of 400 total. Only one hospitalization, and that person was in poor health. All the same, they got better quickly. Covid just isn't very dangerous to anyone young and reasonably healthy, vaccinated or not.
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...and now New Zealand...
Amazingly there are extreme left NZ politicians who want NZ to go back to their zero covid strategy. All the vulnerable have been vaccinated. Give it up.
https://www.irishpost.com/news/waterford-has-irelands-second-highest-covid-19-incidence-rate-despite-fact-99-7-of-residents-are-fully-vaccinated-222363