Yeah I know what you mean! My guess is it's budget intensive and boring. Imagine a nuclear fallout and somehow you survive... what are you going to do for the next 3 years? probably die in some slow and painful or unexpected way. Wouldn't make for much of a show. 

I heard somewhere that the best tv is about people. I don't know if I agree because the people stories can get very annoying - like all the talk in the walking dead, they just don't shut up! I'd love to see the science of it as well, but I do wonder if those sayings are true - if the action would be too boring to most people. 

 For a nuclear war, I want to know which cities got hit, where the fallout spread, how people mostly died, then what? Nuclear winter? Crops dying? People starving? Communication problems? Government collapsing? This is an entire show just about the world ending, many seasons long. They could show human conversations and families struggling. Instead of showing post event survival, show pre-event and during event survival. Each week could be the collapse of the next piece of the puzzle. 

 I'd be on board with that! Derek, can you call up the Hollywood studios and convince them? 🤣