Well, no one would be happy to do it, would they.
The reality is, we need a vaccine or a government with South Korean levels of competency. It shouldn't be necessary to lockdown for these lengths of time if test and trace is working efficiently. However if we can't sort that out then we're looking at carnage without lockdown. No, that's not too strong a word-watch an ICU nurse's account of what it's like in there before you start awarding penalties for mongering. Go and work in a care home and decide how scared you are and how complacent you think others should feel. Death from covid is by no means a rare, tolerable or normal aspect of life and it doesn't 'just' happen to the vulnerable.
So if you're asking, do I have so little faith in the government that I don't think they can sort out test and trace....I couldn't have less faith in the government's competence. I don't think they could find their way out of a paper bag. That's why I might consider locking down for that length of time. Also, like most of people, I have family members who are apparently fit and healthy but now would be considered at risk.
The fact that covid can redefine what vulnerability means should be a watching to anyone wishing to think of it as trivial. Across the population, it's so infectious and complications occur so often that it's not even manageable.
People seem to forget that we once had to 'lockdown' routinely if we'd been exposed to an illness with potentially serious consequences, causing great inconvenience. It was called quarantine and we just had to suck it up. You would have been run out of town for trotting down the high street saying you had scarlet fever but any one person's chances of dying from it were low and anyway, death was normal. But what else can we expect in a society where people are so absorbed with their own preoccupations that teachers routinely have to deal with outbreaks of d and v because some parents don't like the d and v rule? We're clearly expert at burying our heads in the sand when it comes to public health and preventative medicine.