It's not practical to have 30-40% percent of the UK population shield.
How is this any less practical than having 100% of the population in lockdown?
And I'm not sure where your 40% comes from... there are currently 1.5million people shielding out a population of 66million.
You must realise the NHS would stop running if everyone especially those at risk got ill or died (particularly bear in mind many at risk work for the NHS)?
Is the NHS even running right now? They've stopped basically everything apart from Covid treatment all while nightingale hospitals are sitting empty.
What do you think happens to the economy if we have unchecked Covid running through the UK? Even if people don't die, many mild cases are still knocked off their feet for weeks.
Again I do not see how it could be any worse than 100% of the population off their feet right now. So we have a terrible 6 months with reduced services while people call in sick. This would be over the summer when the NHS has most capacity, anyway. And then it's done. It's passed through the bulk of the population and it's over until the next pandemic. To me this is preferable to years of on and off lockdowns, people certainly losing their jobs and businesses, their homes, fucking up children's education. People are holding on to this vaccine, who says there is one? Who says it won't just mutate over the winter? It's already mutated three times, it's not ridiculous to think it won't happen again.
Just because some lucky people have it extremely mildly don't assume that's the case for everyone.
I'm not. I'm basing my opinions on the statistics. By the same measure we keep hearing all these people screaming til they're blue in the face that it effects young and healthy people too!!! So do car crashes. So does cancer. The risk is so minuscule it's not worth losing sleep over. And for me it's certainly not work risking my home, business, or children's education for.