Animal Mother - You\'re wrong. Plain and simple. Life is alot more resiliant and adaptive than you think. I mean, if you take just a cursory look at life on this planet and what what it needs to thrive.. then yeah.. you\'re not going to be optimistic about what\'s out there. But if you look closer, you\'ll find life in even the harshest envrioments. Boiling sulfer pools, deep in the freezing bottom of the ocean under the north pole, and even cockroaches (which evolved in a radiation free enviroment) have adapted to thrive in heavily radioactive areas.
Then again, you\'re also just looking at carbon based life. What about silicon based life? What other compounds can support life? Even where there\'s just microbes, that\'s still a start. How many billions of years did it take earth life to evolve past single celled organisms?
Anyhow, I don\'t think we\'re evolved enough for Aliens to land. They know us.. they study us.. they\'re not stupid. They know sooner or later we\'ll all be partying at the bar and we\'ll take em out back, beat the sh*t outta em, and steal their flying saucers. Hell, I would.. and you would too. Don\'t lie.