Economic growth, in our current paradigm, requires the production of ever more goods, which in turn requires ever more energy and natural resources. That is unsustainable, because nature is finite.
My personal theory is that any advanced civilization that is capable of interstellar travel must have conquered their animal instincts and realized that growth for the sake of growth is pointless.
My personal theory is that any advanced civilization that is capable of interstellar travel must have conquered their animal instincts and realized that growth for the sake of growth is pointless.