Will you ever understand the purpose of science? Its purpose is to describe and understand natural processes.
But of course even your factual claim about Darwin is false:
It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us. These laws, taken in the largest sense, being Growth with Reproduction; inheritance which is almost implied by reproduction; Variability from the indirect and direct action of the external conditions of life, and from use and disuse; a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms. Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.
Until the Taliban becomes a non-issue the following will remain an issue.
That is why the struggle between the various species does not arise from a feeling of mutual antipathy but rather from hunger and love. In both cases Nature looks on calmly and is even pleased with what happens. The struggle for the daily livelihood leaves behind in the ruck everything that is weak or diseased or wavering; while the fight of the male to possess the female gives to the strongest the right, or at least, the possibility to propagate its kind. And this struggle is a means of furthering the health and powers of resistance in the species. Thus it is one of the causes underlying the process of development towards a higher quality of being
Adolf Hitler, "Mein Kampf"
Guess you consider your quote from Darwin a refutation but it just proves my point. Are you saying that the words I bolded are the morality of evolution? It is indeed worse than what I said, he exalts death, famine, and war as the agents of evolutionary progress. Seems exactly what the Nazis and the Communists used as an excuse for their barbarities.