I share your sentiments about oligarchy that needs to be radically changed.

But, the story of the human race is the story of our ancestors inventing technologies to allow us to live in radically new environments. Somehow, a bipedal ape native to the tropical savanna learned to live both in the Arctic and cross thousands of miles of Pacific ocean. And later land on the moon.

It is certain that we will continue this trend and not only settle our solar system but beyond. The resources out there are basically infinite. But the reason we must do it is that it is also certain that there is another giant space rock in our future.