A proof of god.
Our earth is put at just the right distance of the sun, perfect tilt and rotaition, we have water that sustains life. Tellme, HOW IS THAT A COUINCIDENCE!?!?
You realize that there are billions of stars, if not more. Some of which could have a planet that was placed in perfect orbit, with all the necessities of life.
Also, I doubt our planet started in a perfect condition for life. It "evolved" to suite life. In fact, the planets in the Sun's orbit are slowly drifting from the sun. At one point in time it was theorized that Mars was capable of sustaining life, but as it drifted farther out it became too cold for life to exist. (Can't remember where I read this theory)