But the odds have to be very very low. Its not just abut being in the goldilocks zone (where water can exist in liquid, solid and gas), there has to be a decent moon, we cannot exist without the moon. There also has to be a rotating iron core as that gives us a magnetic field so we are protected from the Suns radiation. And there has to be a source of water from comets and meteorites bombarding the early planet as we had. So, a formation of a new solar system needs to put all that together for the narrow window of the goldilocks zone.