Elon Musk engineered the Starship to have massive tonnage required to build a self-sustaining city on Mars, far beyond what smaller rockets could ever achieve affordably or practically. “It’s designed to make life multiplanetary, otherwise extreme overkill for mere Earth sector activity! Starship fleet mass to orbit per year will be more than 1000 times all current Earth rockets combined, including Falcon. Necessary, for a city on Mars.”