I've got a friend whom I like to tour with who simply loves to cook "in the wild" and of course I let him : )
For him, it's a chance to be creative, "what can I create out here with so little?" and I'm not sure it isn't one of the main reasons he likes to tour.
For me, if I want a hot meal, I generally find a local diner or cafe at least once a day.
Nice video above, and some good information.