As the evidence for evolution mounts, more and more LDS are looking for the middle ground and adopting some hybrid theory of creation, usually adopting some form of “Theistic Evolution” in search of a middle ground that doesn’t make their heads explode.
I’ve heard many interesting and creative theories that blend the two (evolution and “God”), but most avoid one really uncomfortable aspect of evolution: If you know what you want to make, Evolution is an inefficient and inexact way to get there. Basically, it is the wrong tool for the job.
The whole idea behind evolution is that you don’t know how it’s going to end up. It’s gradual change over time, with improvements being made bit by bit (or with punctuated big bits).
But supposedly God knew all along exactly what the end product was supposed to look like (namely: like Him). He knew the form and function of all the organs, and the total anatomy from head to toe. This idea is most explicitly outlined in the LDS doctrine of “Spiritual Creation“, in which things are actually created in spirit form before their physical creation. But how can that be possible with evolution?
This theory would suggest that God using evolution was a process with a goal; it had to come out just right so it would look just like Him. It couldn’t result in humans with three arms, or one eye. That’s not what evolution is.
The other problem is the ongoing nature of evolution. The story of the creation gives the idea of a creative “period”, and then the state where things are “created”. 2 Nephi 2:22 certainly frames the creation in such a way. But evolution doesn’t have an end. How could it? How could God be evolving thousands of different species, each moving slowly towards their intended finished design, and then find that one moment in time where a species is “created”, and then have it keep evolving? And what happens when some speices are fully evolved/created after 20 million years, but other species need 80 million years, or 100 million years? Do some animals get their spirits first? Are there animals even today who are not yet “created”, and are spiritless lifeforms waiting to evolve into their final “spiritual” form?
And what happens if a species evolves away from it’s spiritually created form? Does it become “uncreated”?
Sure, God could use evolution (a time consuming and wasteful process) to “create” life to the exact specification he had alreay prepared, but why would He? Other than the fact that some LDS need to reconcile the evidence for evolution with a belief in God-centric creation, why would anyone believe that?
(If you want to brush up on what, exactly “Evolution” is, I highly recommend taking 10 minutes of your time and watching this fantastic, wonderful and interesting video: Evolution )