The fact that you can't envision a world where natural forces produced all of this and the reductiveness of your argument demonstrates a profound lack of imagination and an unwillingness to engage with possibilities that challenge your world view. We suspect all of this evolved over eons because we can see it writ small in the changes that organisms undertake even today, and we extrapolate to the eon because we can see these changes play out in a fossil record to produce entirely new kinds of creature. Saying that this is simply impossible without providing any alternative explanation for the evidence asks us to take too much on faith. If you're going to say that the great body of research and evidence led us to the wrong conclusion you now have the task of explaining, for each piece of evidence, what the alternative explanation is and how your explanation is better than ours.