Why are Christians against evolution?

[Darwinian]

I'd like to ask you this question:

You say you are a Christian but accept evolution. Do you think that evolution is part of " God's plan "? i.e. created by God.

In a word, yes.

But doesn't that go against the teachings of Genesis? I take it that you interpret this part of the bible in a non literal, poetic sense. If that is the case, how do you know that the whole bible isn't intended to be taken that way.

Basically, how do you pick and choose which parts to take as gospel and which not, if you'll excuse the pun..