Did you ever realize what a lifesaver the backpack is? Think about how many vitals the average wilderness pack transports on a given trip--food, clothing, shelter, hydration. If you need it, the backpack holds it. To a point. If you happen to need something completely oblong, large, heavy or awkward, the average backpack might not be able to help you out. If you're trying to shove 50 lbs. of camera equipment or a few fishing...