I respectfully disagree. The simplest answer, in materialist terms or any terms for that matter, is that we evolved to the point that we did. When one uses Occam's Razor, one must also include the question: What else needs to be true for this to be the case? For God to have created the world, we must "know" for a "fact" that God exists and created us (as opposed to being created by another vastly superior species, or avatars in a matrix, etc.). There is zero scientific evidence for a God. If one believes, it is pure faith. Science doesn't care about faith, it cares about what it can see and measure and categorize. Evolution is not so complex if one knows that Earth is very, very, very old (true), and that species evolve to suit their environments (also true) and that we've evolved from a lower form of hominid (also true; we literally have skeletons).

Occam's Razor simply is a quick and effective orientation tool before diving into a new area of thought. "Hey, Dave, I saw a fire-breathing dragon last night in the sky over my backyard!" Occam's Razor says: You likely did not see a literal dragon, as currently fire-breathing dragons are not known to exist. More likely, you saw something else, like fireworks or a meteor. This adheres to the law of parsimony; I don't need to believe in far-fetched circumstances like my buddy being the only living human right now on Earth to have a fire-breathing dragon flying around his backyard. I wouldn't call my buddy a liar to his face, or even think he was lying. I would believe he misidentified something...and leave it at that. Unless he provided ample physical proof to back up his claim. Occam's Razor, in other words, is one of the thinking tools in our belt that prevent us from hopefully falling down rabbit holes and believing stupid, innane conspiracy theories (like Pizzagate).