Bah! Other than extra water, what's mine is mine. Will I share? Yes. But that means getting something back. My pack is just as heavy as the next guy, but if he's under packed, why should I make my pack heavier? He can borrow my knife, drink some of my water (he can keep that), use my fork while I use my spoon, squeeze into my tent. But to carry doubles of everything isn't really practical, much less fair, IMHO. I'm not in the business of giving things away, especially on a student's budget. Maybe to my girlfriend or brother, but that's about it.