If this thing can basically be treated no differently than the common cold once vaccinated by most people and in the outliers something a little worse there will be no popular support to continue draconian lock down measures.
The goal is to stop the bleeding. The patient is on the floor right now and haemorrhaging liters blood. We want to stabilize the patient and let them get on with their life as quickly as possible. We cannot let perfect be the enemy of "Good Enough" here.
At least in the west, global logistics of vaccination seem to have collapsed. We need to, as a species, get on top of vaccine rollout for next time. It’s delayed at the moment because we didn’t make enough vials over summer FFS.
And? The world doesn't end when new strains of the cold or the flu happen. Every year. As it's happened for as long as there have been humans.
Humans have "eradicated"... Polio? Because it's rather serious? What else have we eradicated?
COVID is here to stay.
However, in the US a lot of diseases were eradicated locally. Malaria used to be endemic, and tuberculosis.
There’s also a list here: Diptheria, Mump, Measles, Rubella
Some have made small comebacks due to anti-vaxxer sentiment, but eradication certainly isn’t some impossible goal.
https://www.beckershospitalreview.com/quality/6-diseases-the...
https://theconversation.com/tuberculosis-kills-as-many-peopl...
Are you into apocalypses? There's the British quick-spreading strain, and there are the Brazilian and South African variants that the vaccine does not offer good protection against. I predict that COVID will be like Picardy Fever, not like the Spanish Flu - there will be outbreaks every few years here and there.