Those in favor of lockdown present a false dichotomy. Either we have a hard lockdown or we let the virus rip and kill everyone. That is hardly the case. Lockdowns and business closures are a sledgehammer that had no precedent in history and are not the way we have ever treated any virus or pandemic before. The costs are out of all proportion to the benefits. Many other strategies would be far better.
Here is a great case against lockdowns. How a Free Society Deals with Pandemics, According to Legendary Epidemiologist and Smallpox Eradicator Donald Henderson.
It concluded with this important paper.
There are no historical observations or scientific studies that support the confinement by quarantine of groups of possibly infected people for extended periods in order to slow the spread of influenza. A World Health Organization (WHO) Writing Group, after reviewing the literature and considering contemporary international experience, concluded that “forced isolation and quarantine are ineffective and impractical”. Despite this recommendation by experts, mandatory large-scale quarantine continues to be considered as an option by some authorities and government officials.
The negative consequences of large-scale quarantine are so extreme (forced confinement of sick people with the well; complete restriction of movement of large populations; difficulty in getting critical supplies, medicines, and food to people inside the quarantine zone) that this mitigation measure should be eliminated from serious consideration.The Real Science of Covid – Lockdown Sceptics