The case has been solved! Last night, I came across this in-depth interview with Musk, which directly revealed his ultimate motivation for relentlessly pursuing Mars. Some people always think that he builds rockets every day for money or political ambitions, but in fact, it was all driven by his childhood "existential crisis". Back then, he had flipped through religious scriptures and was tortured to death by German philosophers such as Schopenhauer and Nietzsche. Finally, a book called "The Hitchhiker's Guide to the Galaxy" woke him up: the universe itself is a ready-made answer, but humans are too small to know what questions to ask. The only way to raise the right questions is to infinitely magnify the scale of consciousness. This perfectly explains why he not only crazily calls for humans to have more children, but also works hard to develop digital consciousness through AI, and even builds starships to send people into outer space. Don't measure a businessman based solely on his profit motive anymore. In his eyes, making humans a cross galaxy species is purely to build a sufficiently large network of consciousness to understand what is going on in this vast universe.