There have been several writers posting here about what they believe is a fictitious God. I have read their postings out of curiosity. That same curiosity caused me to go online and research Darwin’s Theory of Evolution. This has been taught in schools since I was a child. The church I was raised in considered Darwin as an ambassador of Satan. I won’t go that far. As I have grown older I have reflected that much of the evolutionary theory could explain much of how God, cover billions of our years has built all of life.
Here are some of Mr. Darwin’s writings about evolution. Actually he was not trying to disprove the existence of a creator. He simply was curious and wanted to know how this could happen. His theory may be true in part but it leaves much to be explained. These answers eluded him.
Darwin's Theory of Evolution - Slowly But Surely...
Darwin's Theory of Evolution is a slow gradual process. Darwin wrote, "…Natural selection acts only by taking advantage of slight successive variations; she can never take a great and sudden leap, but must advance by short and sure, though slow steps."  Thus, Darwin conceded that, "If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down."  Such a complex organ would be known as an "irreducibly complex system". An irreducibly complex system is one composed of multiple parts, all of which are necessary for the system to function. If even one part is missing, the entire system will fail to function. Every individual part is integral.  Thus, such a system could not have evolved slowly, piece by piece. The common mousetrap is an everyday non-biological example of irreducible complexity. It is composed of five basic parts: a catch (to hold the bait), a powerful spring, a thin rod called "the hammer," a holding bar to secure the hammer in place, and a platform to mount the trap. If any one of these parts is missing, the mechanism will not work. Each individual part is integral. The mousetrap is irreducibly complex. 
Being a heart patient and realizing that a heart that does not function as it should has an affect on every part of my body only serves to make me wonder about the parts of Mr. Darwin’s theory that went unanswered. My body is like a wonderful piece of machinery. Every organ in my body depends upon my heart. Therefore, since my heart is in trouble it has a detrimental affect on other organs such as my kidneys, my digestive tract, even my powers of concentration. Not enough blood flow to any part of my body will render it unable to work. That in turn reflects back upon my heart which is not only dependant upon itself but on other organs. A good example is the kidney. Potassium and sodium are electrolytes. Too much or too little of either of these puts more burdens on the heart which is already in trouble. It might be explained like this. A car cannot run unless the carburetor or fuel injection system works. These parts cannot run without a fuel line. The car will move no place without a clutch or transmission, wheels and so on. This means our body could not have evolved from a heart which accidentally developed a digestive system because the heart would be dead before the other organs were there to support it.
Darwin also wrote the following:
Believing as I do that man in the distant future will be a far more perfect creature than he now is, it is an intolerable thought that he and all other sentient beings are doomed to complete annihilation after such long-continued slow progress. (Charles Darwin)
Jesus Christ once told us that man would become weaker and wiser. Mr. Darwin was wiser but we are all proof that this evolutionary thing has not produced a stronger human species. He goes on to write this.
I am a strong advocate for free thought on all subjects, yet it appears to me (whether rightly or wrongly) that direct arguments against Christianity and theism produce hardly any effect on the public; and freedom of thought is best promoted by the gradual illumination of men's minds, which follow[s] from the advance of science. It has, therefore, been always my object to avoid writing on religion, and I have confined myself to science. I may, however, have been unduly biased by the pain which it would give some members of my family, if I aided in any way direct attacks on religion. (Charles Darwin)
I am aware that the conclusions arrived at in this work will be denounced by some as highly irreligious; but he who denounces them is bound to show why it is more irreligious to explain the origin of man as a distinct species by descent from some lower from, through the laws of variation and natural selection, than to explain the birth of the individual through the laws of ordinary reproduction. The birth both of the species and of the individual are equally parts of that grand sequence of events, which our minds refuse to accept as the result of blind chance. (Charles Darwin, Descent of Man p. 613)
But I own that I cannot see as plainly as others do, and I should wish to do, evidence of design and beneficence on all sides of us. There seems to me too much misery in the world. I cannot persuade myself that a beneficent and omnipotent God would have designedly created that a cat should play with mice. (Charles Darwin, source unknown)
While searching online I also found the following. I am not sure who wrote it but it is interesting.
What it is not
Evolution is not about the origins of life on Earth. Evolution is about the development of living things over time. The study of the origins of life is known as "abiogenesis" and any web search engine will find you many examples of current literature on the subject.
Evolution is not about the Big Bang theory, nor the formation of the Sun and Earth. These are subjects for cosmology, not biology. Some creationist websites like to put up list of supposedly tricky questions for evolutionists - if you read them carefully you often find lots of questions that actually have nothing at all to do with biological evolution.
Random. Evolution is often mistakenly compared to "a hurricane blowing through a junkyard and building a fully functional Boeing 747". This is incorrect, as evolution is a very slow, gradual process directed by the actions of natural selection (as shown above in the rabbit farm). Mutations may indeed be random events, but whether or not they remain in the gene pool is certainly not random, as it depends on how those genes affect the creature's survival in the environment. It works as a positive feedback loop.
Evolution is not about attempting to prove that the Bible, Qu'ran, or any other holy book is false. It is simply the study of living things and how they develop over time. Whether or not that conflicts with a particular interpretation of a particular scripture is not a consideration. There is no conspiracy amongst scientists to disprove the teachings of any of the thousands of religions who happen to make claims about the processes of life.
Evolution is not about monkeys turning into men, or showing that humans are "merely" animals. Evolution does show that humans developed from an ape-like ancestor, along with other modern apes such as the chimpanzee. We did not develop from apes, but alongside them, in the same way that different branches grow from the same trunk of a tree. The development of humans is one minor aspect of the study of evolution, but most biologists will find more interesting creatures to study.
My friends in short, the evolutionary theory are just that. It is a theory. It leaves many questions unanswered and it does cause some to become enraged because it causes them to question their faith in God. I would be the first to admit that for a long time I was one of them. One day I simply came to the point where I realized that it simply does not matter. It makes much more sense to me to believe that some form of life (God) knew how to build the human body and whether he did it in six of our days or not is immaterial. It actually takes less faith than to believe that an accident started the whole ball rolling.
I thank God that he has not let me fall into the trap of trying so hard to prove whether he does or does not exist that I have forgotten how to live my life for him.