The solar system clearly has not been thrown together by chance. The precision with which the solar system is designed is far greater than anything man has ever manufactured.
Consider that many stars, perhaps most stars, vary in their energy output much more than does our star - the sun. Our sun varies in its energy output by less than one-tenth of one percent. Life would be impossible on a planet orbiting many, if not most, other stars. In addition, our distance from the sun is very precisely set to favor life on Earth.