Comment: Re:What's the problem with building self-sustainin (Score 1, Informative) 239
There's a whole solar system full of resources to utilise and SPACE to EXPAND since we hate the idea of state regulated birth control>
Even with multiple space elevators, you can't move more people off the planet than are being born on it at any given moment. Expansion into space is not a realistic solution for overpopulation.
You also present a false dichotomy between space colonization and extinction somewhere in the short term. Instead of expanding into space, a quite possible future for sentient races is to move into a virtual reality. Merged with machines and living underground, the human race could withstand catastrophic asteroid strikes and last until the sun expands to a red giant. Voluntary extinction may even be a possibility at some point after the human races has transcended biology. Your fanatical dreams of immortality and exploration of the universe are not the way it has to be.