Something that seems to have been completely ignored is the maintenance of physical and mental health. A sizeable (yes I meant that pun) of this country's population is fat, lazy and unhealthy as a result, and already posing a major burden on our health system. While "social distancing" is somewhat necessary, many of the fat & lazy will see it as further encouragement to not get off the couch and exercise, which will only exacerbate the health problems they already have, further burdening the health system.
On the mental side, well we're in for a rough trot whichever way you look at it. But it's imperative that people are able to get outside, do stuff and be even just a little bit active to keep the brain ticking along OK. Total lockdown is not a good idea; it could very well cause a bigger problem than the one it's seeking to avert.
Here I get a little bit personal.... I've lived with depression in varying degrees of severity for 15 or so years, and right now I'm edgy as fuck. So far I've been able to work as normal, so I've got that routine to stay in for now at least to keep me on a level field. But in the long run I'm more worried about my mental health than the small risk posed by the virus.. I am by nature a solitary beast, so the social distancing thing doesn't bother me in the slightest, I could quite happily not deal with other people for weeks on end. But I need to be able to get out, ride my bike, go kayaking, sailing, bushwalking or whatever, anything to get myself outside to feed my brain. I can do all of these things in total, blissful isolation, posing no risk to anyone else, and less risk to myself..If I am forced to become a virtual prisoner in my own home, I will go batshit crazy hemmed in by the same wals and fences. It won't be a good thing. Depression damn near killed me once before, and I sure as hell don't want to let it have another crack. So I am not locking down, but I'm also not hunting out crowds to hang out in, 'cos that's not my scene anyway.