Why is Christianity incompatible with evolution?
First of all we need to define what a Christian is, a person who believes in, adheres to, trusts in, relies on Christ and believes that he is revealed through the Holy Scriptures (i.e. the Holy Bible.) If you read Genesis you should realize that God created the earth in six LITERAL days (because it mentions "there was evening, and there was morning.) This is not a specific symbolic meaning (as would be demonstrated in say, the Book of Revelations.) If God did create the earth in six literal days than it is already contradictory to evolution which states that after millions of years unicellular organisms evolved into multicellular organisms and we really are descendants of monkeys.
For more information go to
http://answersingenesis.org/home/area/qa.asp
Why, pray tell, do you fancy that your reading of the Holy Scriptures at a remove of nearly two millenia (with its obvious modern bias toward literal textual interpretation) is superior to that given by the generation of Christians alive when the canon of Scripture was fixed, and living in the same linguistic and cultural milieu as the Holy Apostles a mere two and a half centuries earlier?
Neither St. Basil the Great nor St. Gregory of Nyssa nor St. John Chrysostom felt any compulsion to interpet Genesis literally. St. Basil wrote "It matters not whether you say 'day' or 'aeon' the thought is the same." St. Gregory of Nyssa described the first two chapters of Genesis as "doctrine in the guise of a narrative."
Medieval Jewish commentators similarly did not read the opening of Genesis literally, but interpreted it (in ways very similar to that given by the Christian Fathers just mentioned) on the basis of its odd structure in the Hebrew and the oddity of having it fixed first in the Torah, when it itself is not at a surface level an expression of the Law.
Incidentally, don't sound silly when discussing Darwinism: no one believes we are descendants of monkeys, though evolutionists believe they and we have common ancestors--and rather distantly.
Why is simple metaphor such a mystery for some people?