Not all the things I prepare for are major mass-extinction level events.
What I try to do is be prepared for WHATEVER happens. A short while back I took my daughter to a horse show. (She placed sixth in a field of 17 - this was her second show.) One of the people in the group had a headache, and wanted some aspirin. I had the aspirin. Another person cut her finger - I had the antibiotic ointment and the bandage.
I use my SAK at least 3 or 4 times a day.
With what I carry, I could do nicely for an extended period in just about any kind of weather and terrain. Will I need it? Hopefully not, but if I DO need it and don't have it shame on me.
I prepare because I'm not willing to lay down and give up. I prepare because being prepared makes my mind easier, and sometimes makes my life easier.
Besides. It's just plain fun sometimes to work on the gear.
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Knowing where you're going is NOT the same as knowing how to get there.