I remember back when I had a post-apocalyptic RPG I was in (werewolves, yay), I was the ONLY one to actually stop and go 'well, what are they eating? It's been three years since everyone else died...'. And so I did research, and the uni everyone lived at already had a farm, so I spent a week researching what type of things were grown and when, and I wrote up things about preserving food for the winter (plus of being next to a city - TONS of salt and sugar still around in people's houses and restaurants and supermarkets) and...I was the only one to think of it. Or to research it. Everyone else was mostly 'la, just raid a supermarket' until I started poking.

It was...very disconcerting, actually.