This seems to be an attitude more prevalent in the US, to simply assume that it the outcome of this is too horrible and that there is no point in trying. It is actually quite possible to survive and your chances can be greatly improved especially with a little planning and if you read this:
Just because you can improve your chances of surviving a nuclear exchange doesn’t mean it’s desirable. I don’t want to live through the subsequent famines and slow death of everyone I know and love. https://allianceforscience.cornell.edu/blog/2022/03/what-the...
https://www.oism.org/nwss/