I had a conversation with a guy who explains why he rejects Common Descent:
“Where I’m not buying evolution in large scale, again goes back to the collection (or lack) of “transitionals” to prove this happened on a grander scale. All need to be in place for the large scale to have existed.
It’s one thing to make claims on microorganisms (and I can see it justified). It’s a far greater stretch to make the other areas fit.
This is not to say they can’t (God has that intellect), but proof that they did is very sparse at best call.”
There are few transitional forms because they don’t exist. That’s because evolution is not usually gradual. Just like in human technologies, it’s almost instantaneous.
The proof of evolution is not the fossil record, it’s in the lab.
We can and do observe new species in real time – in the lab and in the field, in micro organisms and plants and animals. This happens through large leaps where you get a new species in 1-2 generations (through Horizontal Gene Transfer, Whole Genome Duplication and Inter-Species Hybridization). These mechanisms are well understood today, and they are very much purposefully adaptive and quite non-Darwinian.
Darwinists are in no hurry to tell you about any of this stuff, because once you take this into account they’re no closer to getting rid of God than they were 200 years ago. (These things don’t prove God, but what they do prove is that evolution is teleological. None of these things occur through random copying errors of DNA – far from it!)
And sadly, ID people aren’t in a hurry to tell you about these mechanisms either, because many of them deny common descent. The truth is in the middle, and the truth is 100% compatible with a theistic view. I submit to you that a God who creates an entire evolutionary process is far more impressive and inspiring than a God who merely creates a plant or an animal.