Have control over new infections and resulting hospitalizations so as to not overwhelm healthcare infrastructure. This is especially required in India, where a large section of the population is uneducated, lack propee facilities and live on daily wages, with little to no savings or assets.
As in South Korea, the idea is to ramp up testing so that the country can limp back to normalcy while affected areas are isolated.
Absent the strict lockdown, I dia does not have the infrastructure to handle the surge in cases.
Hopefully, the population gets immunity and effective medicines are developed to immunize or treat the disease.
Absent effective medicines being developed, which are very unlikely to appear for a long time, countries need to consider that they're choosing somewhere to fall along a spectrum of disease, or disease + poverty.
In Star Trek there's the famous unwinnable test, the kobayashi maru, and our hero Kirk says there's no such thing. This is the kind of naive arrogance that is going to amplify an already bad situation.
I don't know much about India or its particular situation but rising food prices are going to be a hell of a struggle.
I had assumed India didn't want to be a closed system.
Good luck trying to contain the flu that way. SARS-COV2 seems to be very virulent, but not so virulent like flu or measles that it can't be contained.
I'm just guessing really. People say flu can't be controlled in the same manner. But we also haven't done that experiment like we're doing now. So maybe the people who say that are just wrong.
This is what India is trying to achieve. Delay the spread (flatten the curve), ramp up health care facilities (doctors, beds and medicine), identify hot-spots and trace ruthlessly and finally hope that some medicine/vaccine would be quickly invented (the whole world is working on it).
It's not a 'political' choice or about 'optics'.
It's also not just 'old' people who are dying. It affects 50+ year olds in not insignificant numbers.
It depends whether you prioritise health or economics.
You can balance health and economics and choose to prioritise one _before_ the other.
It does however requires the political will to support the economy (and the poorest) whilst health care is prioritised to buy time during the exponential phase.
It's not clear what the alternatives are?
I assume you're not advocating a no measures approach.
No lockdown even with social distancing still does huge economic damage and even then you would not get herd immunity - 60% infection rate is required.
This also ignores the potential for a chickenpox-like situation where the virus could reactivate itself, in which case exposing our population to the disease is just going to cause further issues down the line.
If the world did somehow divide into green and red zones, you would have a worse problem on your hands. The red zones are the wealthier western countries, and are more desirable than the green zones. Good luck trying to maintain global economic relevance when you don't allow immigrants from the wealthiest countries in the world. There's a similar argument to immunity passports. If people need to be immune to the disease to re enter the workforce safely, they will infect themselves with the disease to do so.
The green zone will prosper, perhaps those wealthier western countries finding themselves in the red zone will no longer look so desirable. Of course I'm hoping it won't come to this, but it does seem to be the direction we are heading.