@Quartz2208
Who on earth says it is going to end June 21st that isnt the rhetoric at all - that is that it is going anywhere, it is here to stay and like a lot of viruses will be responsible for the deaths of a certain number of people per year like we do with the flu. We will have a vaccine programme each autumn/winter (same as flu). You are right it might not follow that pattern but there is nothing to say it wont (and given other pandemics it would seem the most likely cause)
Why do you think it will be 3 years of lockdowns?
People post on here about things "going back to normal" on June 21st all the time. That's not what the government have said but that is the impression a lot of people seem to have.
It'll be about 18 months since the first U.K. death when we come out of Lockdown on June 21st.
B117, P1 and B1351 are more infectious and more deadly than last year's covid. ( We don't know enough about B1617 yet, but looking at the damage it's wreaking in India only the disingenuous and perpetually wrong about covid would suggest it is any more benign than the others.)
The next wave is forecast for somewhere between now and the autumn, and based on past form our government's response will be inadequate until it's too late and so we'll have to have another five month lockdown.
That takes us to next Spring. By which time uncontrolled spread will likely have thrown up a new crop of variants with a higher degree of vaccine evasion, and we'll spend 2022 much like we've spent 2021.
In 2023 everyone is sick of this shit, and we go zero covid. (This is my optimistic part @Helpmebenicer, it's likely we'll still have a vocal contingent who say "we should just go back to normal. Everything will be FINE.".)
My less optimistic view is that we stupidly allow it to become endemic at a high level of say 80,000 new cases a month in the U.K., and it takes about five or six years to vaccinate the world and until then the variants (and the lockdowns) keep coming. And 50,000 - 60,000 of our children's grandparents die of it every winter.