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Now, why do we just assume all this happens by chance?
That is quite an "illogical" assumption, considering all other planets in the galaxy are not anything like this.




Well Ran Man, though you seem to evade my question about the age of the universe, your own question can very easily be answered:

Why is earth a special lucky planet? Because otherwise no one were there to complain.

Considering all factors that make earth habitable - the pamphlet you're quoting even left out a lot - there are probably about 10,000 earth like planets in our galaxy, and infinite many on the whole universe. And why do we have the unlikely luck to live on one of them? Think hard and I'm sure you'll find the answer.

If you want to look into some really interesting stuff about habitable planets - much more interesting than that boring creationist pamphlet - search with google for the "Drake Formula".