Creationism is not science. Get over it.
And what makes people think God didn't design evolution? I think evolution IS His plan. God just set the whole thing in motion and sits back and watches what happens.
You have it backwards. Evolution is not science. It has been totally disproven by all modern science. The one thing that all modern science has shown is that organisms are just plain too complex to have ever arisen by any sort of random means.