Well, thank you. Glad you feel that way!
To be honest, putting aside my thoughts that Trump is going to be basically, "Big talk, but no action," I think one big reason is because, as a whole, a lot of younger people either don't know the real dangers of nuclear war (they think it would be more like the Fallout games or Mad Max) rather than what it could actually be like. Plus, I think that since the threat of M.A.D. has in some ways prevented war, some people might think nukes aren't all they're cracked up to be.
But I do remember the 80s. After all, it was the Cold War then! At that time, people were afraid someone throwing a rock at the wrong person would blow the planet up. And I'd bet a lot of people didn't understand what nukes might have convinced leaders to do in general.
Funny you should mention it; while I had forgotten about the movie, I did learn about it! At least indirectly; at some point, I had this movie where the sequel to Wargames was put in as a trailer, and when I discovered Wikipedia, I went on there to learn about the sequel and that's when I learned about the original. Even though I haven't seen either, the concepts are fascinating, to say the least. And since you mentioned it, I can see how they represent what people feared at the time.