I don't know enough about evolution to either argue for it or against it. My primary concerns, however, include the following:
1) It seems predicated on the assumption that there is no God, or intelligent designer.
2) The idea that simple organisms can mutate into increasingly complex ones. I'd like to see some evidence this is possible. To think 1-cell organisms can mutate, without a great deal of outside help, into modern humans over a long period of time, is difficult for me to accept.
3) That life and intelligence can evolve from a spontaneous action.
If the Big Bang happened (and I believe it possible), then everything that erupted from it must have been sterile. How can life spring from sterility. Can life and intelligence come from the interactions of electricity on amino acids? I would like to see it. I also would like to see intelligence come from any green slime that might appear.
If evolution can be shown to be consistent with theism, I might be willing to accept it. Nevertheless, I'm also willing to wait until the Lord's coming for answers. "Yea, verily I say unto you, in that day when the Lord shall come, he shall reveal all things—things which have passed, and hidden things which no man knew, things of the earth, by which it was made, and the purpose and the end thereof—things most precious, things that are above, and things that are beneath, things that are in the earth, and upon the earth, and in heaven."