RM&NS is all that is required for the diversity of life we now see and logically comprehend. There is no target for evolution and we are just lucky to realize our own luck. We are just the byproducts of a blind, mindless, and unguided process that never had us in mind. The proof for this? All the biological diversity in this robust ecosystem can be traced back to a single organism that fortunately 'appeared'.
Is it truly, he who dies with the most offspring wins?
Anyway, Darwin observed some bird beaks, took the current naturalistic scientific theories of his day, and tried to unify them with blind and undirected chance to rid science of the theistic stranglehold that he (and others) loathed. The Universities were founded on Christian principles and naturalists were not paid well or considered prestigious. (How the times have changed)
Did he accomplish his goal? Did people really start to believe that lifes origin leading to mankind was mindless, unguided, and without purpose or goal? Lets look:
The National Association of Biology Teachers [NABT] in their 1995 Official Statement on Teaching Evolution stated the following:
"The diversity of life [all life] on earth is the outcome of evolution: an unsupervised, impersonal, unpredictable and natural process of temporal descent with genetic modification that is affected by natural selection, chance, historical contingencies and changing environments."
Anyway, let's look at a college textbook and see what it has to say on the subject:
According to Douglas Futuyamas widely used college textbook Evolutionary Biology(1998), Darwins theory of random, purposeless variations acted on by blind, purposeless natural selection provided a revolutionary new answer to almost all questions that begin with Why? Darwin made theological or spiritual explanations of the life processes superfluous, and thereby provided a crucial plank to the platform of mechanism and materialism that is now the stage of most Western thought.
Well, we can't use this because it is a religious statement. I guess we should look at a required/recommended reading book for college biology:
"Paley's argument is made with passionate sincerity and is informed by the best biological scholarship of his day, but it is wrong, gloriously and utterly wrong. The analogy between . . . watch and living organism, is false. All appearances to the contrary, the only watchmaker in nature is the blind forces of physics, albeit deployed in a very special way. A true watchmaker has foresight: he designs his cogs and springs, and plans their interconnections, with a future purpose in the mind's eye. Natural selection, the blind, unconscious, automatic process which Darwin discovered, and which we now know is the explanation for the existence and apparent purposeful form of all life, has no purpose in mind. It has no mind and no mind's eye. It does not plan for the future. It has no vision, no foresight, no sight at all. If it can be said to play the role of watchmaker in nature, it is the blind watchmaker.
The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design (p. 5)
-Richard Dawkins
Another religious statement? Hmmm The National Association of Biology Teacher's, college textbooks, and required/recommended reading material.
Maybe it's just 'human' nature...
If things that people detest exist in religion i.e. dogmatism, conceit, mockery, intolerance, and power-obsession, why would we not expect to see it in science as well? Especially when science becomes religion.
While Futuyma might think he was saying something profound, what he was asserting was utter nonsense. To say that something blind and purposeless is an answer to the question of 'why' is to avoid answering the question. It also is not science, Humean skepticism is totally inimical to science.