Examples of people who live with just food, air, water, light?
Ascetics and monks illustrate this for us, and I'm glad they do. They are a useful reminder of how little we actually 'need'. And thanks to them, I don't have to prove it for myself....
Lots of people live without the things that we would probably add to those as needs. For example, many people live without shelter, and from what I can see some percentage of those actually choose to do so. They value their freedom, or something, more than they value living in shelter provided by the state or charitable groups.
To bring this back to principles which we can apply to our own lives: we value shelter, and I'm guessing most folks here have a strong preference not to lose our homes. Some of us even value being able to express our individualism therein. But if we perceive that our homes must increase in size in proportion to our incomes, or we must be allowed to paint our dorm room vermillion, we are creating stress in our own lives by how we view the preference.