'scarcity is the root cause for …

Scarcity, or limited resources, is one of the most basic economic problems we face. We run into scarcity because while resources are limited, we are a society with unlimited wants. Therefore, we have to choose. We have to make trade-offs. We have to efficiently allocate resources. We have to do those things because resources are limited and cannot meet our own unlimited demands.

Without scarcity, the science of economics would not exist. Economics is the study of production, distribution, and consumption of goods and services. If society did not have to make choices about what to produce, distribute, and consume, the study of those actions would be relatively boring. Society would produce, distribute, and consume an infinite amount of everything to satisfy the unlimited wants and needs of humans. Everyone would get everything they wanted, and it would all be free. But we all know that is not the case. The decisions and trade-offs society makes due to scarcity is what economists study.