>I agree with your sentiment. We should not be ALLOWED to move beyond this planet. We will only bring harm wherever we go.

Exactly - if we ever DID decide to try and colonize another planet at some point in the far distant future, the main factor in doing so would be profitability. Money drives everything, including innovation - there is little use for innovation unless there's a return on the time / investment. If deep space travel ever did become viable, it would be only because massive corporations or governments see a large enough profit to continue pursuing the idea.