The 'exit strategy' for all of this is a combination of factors.
A greater capacity for the NHS to deal with the high number of sick people.
The development of a vaccine, which would be prioritised for vulnerable people and key workers first. Potentially then school children, like they are given the seasonal flu vaccine now.
The development of suitable treatments to help reduce the number who are very poorly or dying of this virus.
Yes, the growing 'herd immunity' of people who have had it, probably unknown to them if mild, who have some degree of immunity.
And the development of the antibody test to prove if you've had it and are safe to be out and about.
It's not about whether we are losing money and freedoms, or if the children are missing their friends, education and structure. It's about preventing as many people as possible from dying.
As soon as restrictions are lifted, without several of those points in place, cases will surge up again and we are definitely going to be looking at waves of restrictions being tightened and loosened over the next 2 years. The Spanish flu, for example came in 3 significant waves over 18 months, and in some areas it was the 2nd wave that was the most deadly. We have better living conditions and good levels of medical intervention and antibiotics that they did not have access too, thankfully.
The flu epidemic in the 60s (H3N2) that killed thousands still kills thousands as it's around as our seasonal influenza A. Covid 19 may be around for a very long time to come, we just have no defenses against it at present.