That's an interesting comment. Now, colonization and "we can't live on just this planet forever" imply totally different things. Colonization means sending a few people out so they can reproduce and colonize or populate another area, so we can control it. Your comment appears to imply that we would eventually need the moon because we would become over populated here on earth. I find it hard to believe that it would eventually be cheaper to ship people too the moon to live than to just cut welfare and wait for them to die of starvation. I also don't see how overpopulation would naturally become a problem. Just stop handing out welfare and people with either stop over-breeding or die.

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Little known fact #46: Every definition of a given word in a dictionary is used equally as often.

Little known fact #53: Your testicles serve only one purpose: to reproduce. Every other function is a complete accident.

Little known fact #65: Because the human body does not prepare for death, humans never die.