The lockdowns weren't there to stop you spending a day in bed. They were broadly to protect those who had the highest risk of getting seriously ill from covid.

And actually, they didn't really care about those people, it was just that if those people were blocking up hospital beds, 'the rest of us' were going to start dying from the normal totally treatable things that happen to us. It was really about limiting the wider impacts, not helping someone in their 80s live a other 5 years (though I totally believe someone in their 80s or at any increased risk deserves that respect and support from the rest of society, and deserves people making small adjustments to protect them)