BUT, if you ask me to choose between work and risking being away from my kids for 2 weeks, well then my children matter more to me. And I don't think I'll be alone in that.
a) if you were exposed you wouldn't have a choice, it would be too late for you to make a choice.
b) if you want to avoid the possibility of a) make a choice and quit being a nurse now, to avoid that potential risk.
Your logic is fundamentally flawed on these two points alone. So I guess you will be handing in your resignation in the morning then?
Further to that
c) if you just fuck off at the last moment, when theres an outbreak then you are putting patients lives at risk. Not simply from COVID-19 but from a lack of general staffing.
d) if there is a large scale outbreak and its highly infectious, all qualified medical staff might well be compelled by law to work in the NHS or face criminal charges. This sounds crazy, but this is the reality of the power of the Civil Contingecies Act.
e) And even if you werent legally obliged, socially, you'd be pretty unpopular if you refused to help. I'm not sure who you think would employ you under those circumstances, and you sure as hell wouldn't get benefits with all the medical job vacancies that suddenly pop up. So you'd have to be financially able to do this, perhaps indefinitely.