@Leadfoot,
It's hard to study biology and biochemistry in any depth and not ask oneself these questions. People who study physics have an easier time being atheist, i think. They don't spend weeks trying to understand meiosis or memorizing the Kreps cycle.
I still remember this moment when the biology teacher presented the way legumes (peas, beans, etc.) make room inside its root system for a particular species of Rhizobium bacteria that will live inside the plant and help it fix atmospheric nitrogen. One of the chemical reaction involved is inhibited by oxygen, and those legume plants have 'found' a way to starve of oxygen the precise part of the root nodules where the Rhizobium is hosted, allowing the whole symbiosis to work.
Presented with the full complexity of the system, the classroom went into a collective WOW!
But there's still no doubt in my mind that the fossil record and genetics points to a fairly random evolution process. Evolution does not require magic, just time. And yes, the final result after hundreds of millions of years of evolution does look gorgeously complex and beautiful, and it looks like it's been designed, but the evidence shows that it hasn't been designed, that it grew out of hazard and necessity.
The key to squaring that circle is to understand that life started in simpler ways and forms, and progressively diversified and complexified. Looking at the final product only, you would think it's been designed, but looking at the fossil record one can reconstruct the very very very long and haphazard process that led there.
If God was such as smart Ass, He didn't need all these millions of years to make it happen. He could have designed the whole thing in six days... But we have evidence the He didn't, that it took a very slow and protracted process to get at the stage where we are today, with legumes, humans and all.