The youngest generations are what keep the economy moving. They produce the goods and services, and are the primary buyers of products. When the proportions of

The youngest generations are what keep the economy moving. They produce the goods and services, and are the primary buyers of products. When the proportions of young to old get too skewed, each one ends up paying more and more to support the older generations - which means they can't buy as much either. It's economically very bad to have an aging population. Also: It seems in general most economies are centered around indefinite growth. That may sound absurd, but regardless a shrinking population reverses that assumption and causes problems.