I don't think there's any reason to feel silly. I grew up with parents that would take reasonable preparations for a variety of possible disasters - earthquakes and fires being the two of note for California. Cans of fish and fruit will last decades and can be cycled out over time, dried pasta will last years. Jars of sauce or preserves have similar lifespans, crackers can last months, dry grains as well.

I don't think it's difficult to imagine situations in a lot of places where natural disasters can disable things for several days, maybe a week or two. A couple weeks of food seems like a good thing to have on hand, regardless of place, time or situation.