I believe people often find strength they didn't know they had in such occassions. So far, you've never really been tested so you don't know what you're capable

I believe people often find strength they didn't know they had in such occassions. So far, you've never really been tested so you don't know what you're capable of. In truly dire circumstances, the motivation to survive another day, month, year till the war ends carries people through. I believe the fact that things that really matter (i.e. your life, life of loved ones) and for once at stake and not just BS distractions like jobs or money really kicks up the motivation. Nuclear holocaust is probably different because there's nothing to look forward to, but that's a very unlikely scenario (and, even if it happens, you're likely to be among the quick casualties anyway).