You seem to be confusing needs and wants. You need something (fuel, for eg) to achieve a want ( a holiday, for eg). Obviously, if you want to be slack in the use of the terms you can call most people's summer hols a need, but that's a pretty flabby definition of a need in the context of this thread. Your list is far from making planesleuth's thoughts look silly, quite the opposite.
Everything except 2-3k calories a day and a few litres of water are wants, we don't "need" anything else.