the nuclear war itself wouldn't be exciting in particular, though if i manage to survive alongside every loved one intact, then at least for that time, i would be too happy about that to be horrified about everyone else.
after, yes, it depends on the scale of the nuclear assault:
- if the disaster is in ecological scale, then no, growing old in some bunkers i've managed to crawl into is not going to be particularly stimulating.
- if the disaster is centered around the world's major cities, civilization is gone as we know it but humanity survived... then yes, the rebuilding can be very interesting.
people here are underestimating themselves: under the circumstances, if it happens, most people will eventually find the positive spin, whether it exists or not, because in that scenario it fucking happened, their entire world shaped by it, and they had to live with it - whatever life they rebuilt, they built on it.