We need the right to use land and other property to produce new goods and services. We shall see that all rights can be understood as property rights. But this is a contentious point, not always easily understood. Many people wonder why we couldn't voluntarily share our goods and property. Property is a necessity.
Property is anything that people can use, control, or dispose of.
A property right means the freedom to use, control, or dispose of an object or entity. Not at all. If our world were not characterized by scarcity, we wouldn't need property rights. That is, if we had infinite amounts of everything people wanted, we would need no theory of how to allocate such things. But of course scarcity is a basic characteristic of our world.