In answer to the time old question; if God doesn't exist, then what are the chances of the world being perfect for life?

In short; *very, very high*! Let us take, for example, the theory that the universe is infinite. Let us accept that it is the case, just while I explain.

If the universe is infinite, so are the chances that there will be life. On many planets, in fact. No matter how low the probability, it is still *almost certain*. Let us take the probability of 1/100. If you times it by infinity (Which is impossible, of course), then it will reach 100, making it almost certain to occur, an infinite number of times. Whatever the probability that a planet will sustain life, it will still be almost certain to occur an infinite number of times.

I probably didn't explain very well, so feel free to ask for clarification on any point.