It's hard to extrapolate from a sample size of one. My personal assessment is that microbial life is probably fairly common and technological civilizations are vanishingly rare. It's a big universe so we're probably not the only one, but we could easily be the only one in this galaxy. The fusion of two microbes to produce the mitochondria-powered cells that drive complex organism could have occurred a billlion years later or never. Without a large satellite to produce significant tides, the colonization of land would have been greatly delayed. Without a planet like Jupiter shielding us, we migh still be subject to frequent asteroid strikes. Even if life forms wherever the chemistry is right, there are other conditions to meet to get to something like us.
I'm not anti-Christian. I'm anti-stupid.
