Creationism destroys the credibility of conservatism. We have gotten where we are because conservatism was supported by the evidence, even when the leftists argued against it.
But evolution is fact, deal with it.
I am waiting for evolution to catch up with the left. Eventually, labels won't be required, as the coalition of the quivering, an expression I picked up from M. Malkin, will eventually have both eyes on one side of their face, like the Picasso paintings. Their mutual attraction will eventually lead to in-breeding on a massive scale which in turn will lead to die-off or a lemming-rush to the sea.
Don't you wish you could come back 500-1000 years from now to discover just how wrong we were about things we are so sure of now?
I don't think creationism destroys the credibility of conservatism. Historically, conservatism has included the religious who have generally favored the conservation of helpful moral principles and traditions. Creationists are nothing more than committed, conservative religionists.