Final answer:
People are never satisfied with what they have; they always want something more or something different. This is because of the concept of scarcity in economics.
Step-by-step explanation:
People are never satisfied with what they have; they always want something more or something different. This is because of the concept of scarcity in economics. Scarcity means that there is never enough of anything to satisfy all those who want it. Even the wealthiest individuals cannot have an endless supply of everything they want due to limited time, money, and resources. Therefore, it is natural for people to always desire more or something different.