The UK originally planned for herd immunity withOut a lockdown. Imperial College then predicted 150,000 deaths in the UK which spooked the Government into abandoning that policy. As it is, we have had 35,000 deaths, which will probably double by the end of the year
If lockdown saves 75,000 - 100,000 deaths, it is difficult to argue that the cure wasn’t worth it.
It would be political suicide to let 75,000 people die if it was/is avoidable.