That might be the future, at least for a while!
The question boils down to whether we want the entire population to live in lockdown for months/years/forever in the hope that covid goes away.
Perhaps the real inconvenient truth is that this is something we can't avoid. Perhaps, as I said earlier, the reality is that do have to alter our current views on life expectancy. Maybe, just maybe, the reason that the "live with it, like we live with 'flu" line is starting to be pushed along with "'flu kills hundreds every year" (in fact over 3000 in 2018, in Australia alone) is that the powers that be are fully aware that this will never go away, and that no vaccine will 100% stop it.
When the Doherty modelling says "it's safe to open up at x% vaccinated", I am 100% certain that they are not saying "no-one else will ever die of covid" - such a concept defies all logic. What they are saying, I suspect, is that the small gains to be made by waiting beyond that % vaccinated do not justify the massive impact of lockdowns.
Perhaps I'll never get to see any grandchildren, but I think I'd rather have my kids enjoy their lives whilst I'm alive!