location is probably the reason we are here. rare earth hypothesis anyone? https://en.wikipedia.org/wiki/Rare_Earth_hypothesis  

"The right location in the right kind of galaxy Rare Earth suggests that much of the known universe, including large parts of our galaxy, are "dead zones" unable to support complex life. Those parts of a galaxy where complex life is possible make up the galactic habitable zone, which is primarily characterized by distance from the Galactic Center."